Coding and coverage · ICD-10-CM

L98 › L98.A › L98.A1

L98.A12 Non-pressure chronic ulcer of left upper arm

Not billable (header)Chapter 12

Report one of the more specific codes below.

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Codes under this one

  • L98.A121 Non-pressure chronic ulcer of left upper arm limited to breakdown of skin
  • L98.A122 Non-pressure chronic ulcer of left upper arm with fat layer exposed
  • L98.A123 Non-pressure chronic ulcer of left upper arm with necrosis of muscle
  • L98.A124 Non-pressure chronic ulcer of left upper arm with necrosis of bone
  • L98.A125 Non-pressure chronic ulcer of left upper arm with muscle involvement without evidence of necrosis
  • L98.A126 Non-pressure chronic ulcer of left upper arm with bone involvement without evidence of necrosis
  • L98.A128 Non-pressure chronic ulcer of left upper arm with other specified severity
  • L98.A129 Non-pressure chronic ulcer of left upper arm with unspecified severity

Instructional notes

Chapter 12

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

L98.A

Excludes2Not included here: the patient may have both; report both when both are present.
Inclusion terms
  • Chronic ulcer of upper limb NOS
  • Non-healing ulcer of upper limb
  • Ulcer of upper limb NEC

L98.A1

Inclusion terms
  • Non-pressure chronic ulcer of axilla

Chapter 12: Diseases of the skin and subcutaneous tissue · L80-L99 Other disorders of the skin and subcutaneous tissue (L80-L99)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.