KRAMER, Judge:
The appellant, Robert T. Johnston, appeals a May 18, 1994, decision of the Board of Veterans’ Appeals (BVA or Board) denying increased ratings for shell fragment wound residuals of the left wrist, right thigh, and left anterior chest, each rated as 10% disabling. For the reasons that follow, the Court will affirm the BVA decision in part, vacate it in part, and remand two matters for adjudication.
I. BACKGROUND
The appellant served on active duty in the U.S. Army from June 1967 to April 1969. Record (R.) at 63. Service medical records reflect that he sustained multiple shell fragment wounds of the left wrist, left chest, and right thigh in Vietnam. R. at 44-48. In July 1969, a Veterans’ Administration (now Department of Veterans Affairs) (VA) regional office (RO) granted service connection for residuals of multiple shell fragment wounds to the left wrist and right thigh, each rated at 10% disabling, and granted a noncompensable rating for residuals of the left anterior chest wound. R. at 77. The appellant did not appeal this decision.
In March 1985, the appellant was involved in an automobile accident in which he sustained a fracture of the spine that left him paralyzed below the waist. R. at 87. In September 1985, he submitted a claim for non-serviee-conneeted pension. R. at 89-92. In November 1985, the RO issued an administrative decision that concluded that because the appellant’s blood alcohol level on the night of the accident had been .258%, his injuries were the result of his own willful misconduct. R. at 128. In December 1985, the RO notified the appellant that his claim for non-serviee-conneeted pension benefits had been denied. R. at 130. Later that same month, the appellant filed a Notice of Disagreement (NOD). R. at 132. The RO issued its Statement of the Case in April 1985. R. at 141-45. The record reflects that the appellant did not perfect his appeal.
In February 1990, the appellant requested an increase in his disability compensation. R. at 164. In a March 1991 VA examination, the examiner stated the following:
Item # 1. On the lateral surface of the right thigh, the lower l/3rd there is evidence of an entrance wound of a shell fragment. This is a circular with a circumference of a diameter of about 1 inch +. The skin itself is depressed, but not fixed to the underlying tissues. There is no edema. No foreign bodies able to be felt. There is no evidence of any herniation or infection.
Item # 2. On the dorsum of the left wrist, there is a scar from the entrance again of a shell fragment. The wrist itself is mobile without any crepitus or grating. The mobility is good. There is no evidence of infection. There is no pain on motion. Item # 3. In the left anterior chest in the mid axillary line, there is a[n] oblique scar about 1 y¿ inches long, which is just at the level of the 12th rib. This is well healed without any infection or herniation. There is no inflammation. X-rays available fail to show the evidence of any foreign body beneath this wound, which is the prime cause for consideration in this patient at this time.
R. at 194. In April 1991, the RO denied the appellant’s claim for an increase in his disability ratings. R. at 202-03. He submitted an NOD in May 1991 (R. at 207) and a substantive appeal to the BVA in August 1991 (R. at 222-24). In his appeal to the Board the appellant stated, inter alia: “I also ask to have retroactive benefits to the date of the original claim as I have retained shrapnel in my chest since [the] date of [the] original claim. A clear and unmistakable error [CUE] has been made.” R. at 222. In August 1991, the RO confirmed and continued the previously assigned disability ratings for the appellant’s service-connected conditions. R. at 230.
An October 1991 VA chest x-ray report noted “a small metallic fragment beneath the diaphragmatic surface on the left that could be related to a shrapnel wound.” R. at 237. The' examiner’s clinical impression was of a “normal chest, retained shrapnel fragment.” [83]*83Ibid. The appellant submitted a substantive appeal to the BVA in October 1991. R. at 240. In January 1992, the RO issued another decision confirming and continuing its previously noneompensable rating for the residuals of á shell fragment wound of the left anterior chest. R. at 245. In February 1992, the appellant submitted another substantive appeal to the BVA. R. at 252-53. In December 1992, the BVA remanded the case to the RO for further development and review. R. at 265-69.
In July 1993, the appellant underwent a VA examination of the joints in which the examiner noted:
[Right Thigh]; Sustained in Vietnam. He has a depressed, circular scar over the anterior/lateral distal right thigh about 3 inches above the knee. There is no significant tenderness or pain associated with this. He has a good range of motion in his knee and hip. No loss of muscle function in this area, particularly since this is mostly in the quadriceps which function normally. His hamstrings are quite weak on that side, as they are on the other side as well. LEFT WRIST; There is a scar about 1 to 1]£ cm long over the dorsal aspect of the wrist opposite the radial border of the radius near the radial styloid. Range of motion of the wrist is generally within normal limits. He seems to have good strength in all muscle groups tested. There is some minimal tenderness of the wound itself [and] the scar around the wound. There was no evidence of infection.
In the upper left ABDOMEN; He has a linear scar somewhat irregular in shape about 3 inches long, which is quite tender to pressure in the central portion. The degree of tenderness in this area suggests] he may have a neuroma in this region. The abdominal muscle function appear[s] to be normal. There is no impairment of function in his chest wall. X-rays taken of the chest, right thigh[,] and left wrist confirm the presence of small metallic fragments____
Conclusion; I do not feel that the wounds involving the wrist or thigh are giving him major problems. He seems to have some minor discomfort in the wrist, with strenuous use. This maybe [sic] associated with some sear tissue in the area which maybe [sic] impinging on the extensor carpal radialis tendon to some extent, although the muscle seems to function normally. This seems to be a very minimal degree of impairment of function, however.
I do not feel that the thigh wound is causing him any difficulty at all.
As far as the upper abdomen wound, this is the area where he complains the most of having symptoms and other than for the possibility he may have a[ ] neuroma from sear tissue in this area[,] I cannot offer any explanation for this, besides the metallic fragment is miniscal [sic]. I do not think it is a factor in his complaints at all.
R. at 307-08. In August 1993, the RO denied increased disability ratings for the appellant’s service-connected right wrist and thigh conditions; however, it granted an increase in his service-connected residuals of a shell fragment wound to the left anterior chest and assigned a 10% disability rating. R. at 325-27.
On May 18, 1994, the BVA, in its decision here on appeal, denied increased ratings for shell fragment wound residuals of the left wrist, right thigh, and left anterior chest, each rated as 10% disabling. The Board also concluded, as to each disability, that an ex-traschedular evaluation under 38 C.F.R. § 3.321(b)(1) (1996) was not warranted because “the [appellant]’s disorder is not so unusual and exceptional as to render impractical the application of the regular rating standards.” R. at 14-15.
The appellant filed a timely appeal to the Court. In his brief, the appellant, through counsel, argues that his service-connected disabilities have aggravated his life in a wheelchair — -specifically,- that his chest wound causes him pain when getting in and out of the wheelchair and while using crutches, and his wrist wound hurts fi*om pushing himself in the wheelchair. Brief (Br.) at 2. He also argues that an extrasehedular evaluation was required. Id. at 5. The Secretary argues that there is a plausible basis in the [84]*84record for the denial of increased ratings for the right thigh and left anterior chest wounds. Br. at 17-18. He suggests remand of the wrist claim, citing DeLuca v. Brown, 8 Vet.App. 202 (1995) (Br. at 19-20), and argues that the CUE claim that had been raised below was abandoned on appeal because the appellant has not addressed the issue in his brief (Id. at 21-22). The Secretary contends, however, that if the Court finds that the appellant has not abandoned the issue, a remand is in order for the Board to address the issue of CUE in the July 1969 RO decision. Id. at 23-24. The Secretary also argues that because the appellant’s automobile accident injuries were sustained as a result of his own willful misconduct, they may not be service connected either directly or as a consequence of aggravation by his service-connected disabilities. Id. at 24-26. Finally, the Secretary argues that an extraschedular evaluation is not warranted in this case because there is no evidence that the appellant’s service-connected conditions have interfered with employment or that he has undergone frequent periods of hospitalization for his service-connected conditions that would render impractical the application of the regular rating standards. Id. at 26-27. In his reply brief, the appellant argues that, contrary to the Secretary’s assertions, he has not abandoned the CUE issue. Reply Br. at 3.
II. ANALYSIS
A. Increased Ratings
A claim for an increased rating of a service-connected condition is a new claim, not subject to the provisions of 38 U.S.C. §§ 7104(b) and 7105(c) prohibiting reopening of previously disallowed claims except upon new and material evidence. See Proscelle v. Derwinski, 2 Vet.App. 629, 631-32 (1992). A claim for an increased rating is generally well grounded when an appellant indicates that he has suffered an increase in disability since the last rating. Ibid. The degree of disability under the rating code is a finding of fact subject to the “clearly erroneous” standard of review by this Court. See Struck v. Brown, 9 Vet.App. 145, 152 (1996); Lovelace v. Derwinski, 1 Vet.App. 73, 74 (1990); Gilbert v. Derwinski 1 Vet.App. 49, 53 (1990). In determining whether a finding is clearly erroneous, “this Court is not permitted to substitute its judgment for that of the BVA on issues of material fact; if there is a ‘plausible basis’ in the record for the factual determinations of the BVA ... [the Court] cannot overturn them.” Ibid; 38 U.S.C. § 7261(a)(4).
1. Left Wrist
The BVA evaluated the appellant’s shell fragment wound of the left wrist as 10% disabling under 38 C.F.R. § 4.71a, Diagnostic Code (DC) 5214 (ankylosis of the wrist), and DC 5215 (limitation of motion of the wrist), § 4.73, DC 5308 (Muscle Group VIII, extension of wrist, fingers, and thumb), and § 4.118, DC 7803 (scars, superficial, poorly nourished, with repeated ulceration), DC 7804 (scars, superficial, tender and painful on objective demonstration), and DC 7805 (scars, other) (1996). Under DC 7803 and DC 7804, the maximum rating available is 10%; however, DC 7805 directs that the scars be evaluated on the basis of the “limitation of function of part affected.”
Under DC 5214, in order to be eligible for a 30% rating for the major wrist extremity or 20% for the minor wrist extremity, the next higher ratings above the appellant’s 10% rating, there must be ankylosis of the wrist “favorable in 20° to 30° dorsiflexion.” In the March 1991 VA examination, the examiner found that “[t]he wrist itself is mobile without any crepitus or grating. The mobility is good. There is no evidence of infection. There is no pain on motion.” R. at 194. In the July 1993 VA examination, the examiner noted that the “[r]ange of motion of the [left] wrist is generally within normal limits. He seems to have good strength in all muscle groups tested. There is some minimal tenderness of the wound itself [and] the sear around the wound.” R. at 307. Since neither the 1991 nor 1993 VA examinations noted any ankylosis, the appellant does not satisfy the criteria for a rating under DC 5214.
Under DC 5215, the appellant’s current 10% disability rating is the maximum rating available for limitation of motion of the [85]*85wrist. Nevertheless, the Secretary suggests that remand is appropriate because the BVA erred in its failure to consider functional loss due to pain. Functional loss due to pain can also limit range of motion. See 38 C.F.R. § 4.40 (1996); DeLuca, 8 Vet.App. at 205; Schafrath v. Derwinski 1 Vet.App. 589, 592 (1991); see also 38 C.F.R. §§ 4.45, 4.59 (1996). A finding of such functional loss due to pain must be “supported by adequate pathology and evidenced by the visible behavior of the claimant.” 38 C.F.R. § 4.40. Here, although the VA examiner in 1993 noted that the appellant “seems to have some minor discomfort in the wrist, with strenuous use” (R. at 308), the appellant is already receiving the maximum disability rating available under DC 5215 and, thus, remand is not appropriate.
DC 5308 provides a 20% rating for the major or minor wrist extremity where there is shown to be a “[mjoderately severe” injury to Muscle Group VIII affecting wrist extension. As noted above, the VA examiner in 1993 noted that the appellant “seems to have good strength in all muscle groups tested.” R. at 307. Since neither the 1991 nor 1993 VA examination indicates that the appellant has a moderately severe injury to the muscles affecting wrist extension, he does not satisfy the criteria for a 20% rating under DC 5308. Based on the above, the Court concludes that the BVA’s finding of entitlement to no more than a 10% disability rating, under all applicable DCs, for the appellant’s left wrist disorder is plausible and, therefore, not clearly erroneous. See Gilbert, supra.
2. Right Thigh
The BVA evaluated the appellant’s shell fragment wound of the right thigh as 10% disabling under 38 C.F.R. § 4.73, DC 5314 (Muscle Group XIV, anterior thigh group), and § 4.118, DCs 7803, 7804, 7805 (scars) (1996). As noted above, the maximum rating available under DCs 7803 and 7804 is 10%, and DC 7805 directs that the sears be evaluated on the basis of the “limitation of function of part affected.”
Under DC 5314, in order to be eligible for a rating of 30%, the next rating above the appellant’s 10% rating, there must be “[m]oderately severe” injury to the anterior thigh group. The VA examiner in 1993 noted with respect to the appellant’s right thigh that the appellant “has a good range of motion in his knee and hip [and no] loss of muscle function in this area, particularly since this is mostly in the quadriceps which function normally.” R. at 307. The examiner concluded by stating: “I do not feel that [t]he thigh wound is causing [the appellant] any difficulty at all.” R. at 308. Thus, the BVA’s finding of entitlement to no more than a 10% disability rating, under all applicable DCs, for the appellant’s right thigh disorder is plausible and, therefore, not clearly erroneous. See Gilbert, supra.
3. Left Anterior Chest
The BVA evaluated the appellant’s shell fragment wound of the left anterior chest as 10% disabling under 38 C.F.R. § 4.73, DC 5321 (Muscle Group XXI, muscles of respiration) and, § 4.118, DCs 7803, 7804, 7805 (sears) (1996). Once again, as noted above, the maximum rating available under DCs 7803 and 7804 is 10%, and DC 7805 directs that the scars be evaluated on the basis of the “limitation of function of part affected.”
Under DC 5321, in order to be eligible for a 20% rating, there must be “moderately severe or severe” injury to the thoracic muscle group. The VA examiner in the 1991 examination reported that this wound was “well healed” without any infection, herniation, or inflammation. R. at 194. Likewise, the VA examiner in 1993 noted that the retained shell fragment was not a factor in the appellant’s complaints of pain in the left anterior chest. R. at 308. Thus, the BVA’s finding of entitlement to no more than a 10% disability rating, under all applicable DCs, for the appellant’s left anterior chest disorder is plausible and, therefore, not clearly erroneous. See Gilbert, supra.
B. Allen v. Brown Issue
The appellant also argues that he is entitled to increased disability compensation because his service-connected conditions have made his life more difficult in his wheelchair (the result of his non-service-connected back problem); i.e., he complains that his wrist hurts from pushing himself in his [86]*86wheelchair and that his chest wounds cause him pain when getting in and out of his wheelchair and while using crutches. Br. at 2, 4-5. In Allen v. Brown, 7 Vet.App. 439, 448 (1995) (en banc), the Court, in construing 38 C.F.R. § 3.310(a) (1996), held that “when aggravation of a veteran’s non-service-connected condition is proximately due to or the result of a service-connected condition, such veteran shall be compensated for the degree of disability (but only that degree) over and above the degree of disability existing prior to aggravation.” Here, the argument is the converse: that his non-service-connected. injuries are aggravating his service-connected disabilities. Because section 3.310(a) and Allen require that the service-connected condition be the causative factor, not the acted-upon factor, they are not applicable.
C.Extraschedular Evaluation
The Board is required to provide a written statement of the reasons or bases for its findings and conclusions on all material issues of fact and law presented on the record. See 38 U.S.C. § 7104(d)(1); Allday v. Brown, 7 Vet.App. 517, 527 (1995). The statement must be adequate to enable a claimant to understand the precise basis for the Board’s decision, as well as to facilitate review by this Court. See Allday, supra; Simon v. Derwinski, 2 Vet.App. 621, 622 (1992); Gilbert, 1 Vet.App. at 57.
The appellant argues that an extraschedular evaluation was required. The BVA addressed this issue as follows: “[A]n extraschedular evaluation is not appropriate because the veteran’s disorder is not so unusual and exceptional as to render impractical the application of the regular rating standards, pursuant to the provisions of 38 C.F.R. § 3.321(b)(1) (1993).” R. at 14-15. The Board has not offered anything in support of its statement that would identify those findings that it finds important to its decision, nor does it account for the evidence that it finds persuasive or unpersuasive. The Board has simply provided a “bare conclusory statement, without ... supporting analysis and explanation.” Watson v. Brown, 4 Vet.App. 309, 315 (1993) (citing Gilbert, supra). At a minimum, the reasons-or-bases requirements mandate that the BVA address the effect of the appellant’s wheelchair-based life on his service-connected conditions. Nor has the BVA addressed whether denial of an extraschedular evaluation by the BVA in the first instance was prejudicial, on the particular facts of this ease, under Bernard v. Brown, 4 Vet.App. 384, 394 (1993). Cf. Bagwell v. Brown, 9 Vet.App. 337, 339 (1996) (Court found Board’s consideration of extraschedular rating claim in first instance not prejudicial under Bernard, supra). Therefore, the Court finds the Board’s statement of the reasons or bases for its May 18, 1994, BVA decision inadequate under 38 U.S.C. § 7104(d)(1). See Fleshman v. Brown, 9 Vet.App. 548, 552 (1996); Bagwell, supra.
D.Earlier Effective Date Issue Based on CUE
The BVA did not address the issue of entitlement to an earlier effective date (i.e., increase in the July 1969 noncompensable rating) based on CUE. The Secretary argues that the CUE claim that had been raised below was abandoned on appeal because the appellant did not address the issue in his brief. The Secretary concedes, however, that if the Court finds that the appellant has not abandoned the issue, then a remand is in order for the Board to address the issue of CUE in the July 1969 RO decision. Although the appellant did not address the CUE issue in his initial brief, he did argue in his reply brief that he had not abandoned the CUE issue. Therefore, because the issue has not been abandoned, remand, as proposed by the Secretary, is appropriate. See Archbold v. Brown, 9 Vet.App. 124, 133 (1996).
E.Earlier Effective Date Issue Based on Non-CUE issue
To the extent that the appellant may have raised an issue to the BVA with respect to entitlement to an earlier effective date (i.e., increase in the July 1969 noncompensable rating) on a basis other than CUE, such issue has been abandoned because the appellant has not raised it on appeal. See Degmetich v. Brown, 8 Vet.App. 208, 209 (1995); [87]*87Bucklinger v. Brown, 5 Vet.App. 435, 436 (1993).
III. CONCLUSION
Upon consideration of the record and the filings of the parties, the May 18, 1994, BVA decision is AFFIRMED in part and VACATED in part and two matters are REMANDED for further proceedings consistent with this opinion. The appellant is free to submit additional evidence and argument on remand on the two remanded matters. See Quarles v. Derwinski, 3 Vet.App. 129, 140-41 (1992).