L98.424
Non-pressure chronic ulcer of back with necrosis of bone
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 16 never code together
L98.4code
L00-L99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- lipomelanotic reticulosis (I89.8)I89.8
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- viral warts (B07.-)B07.-
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
L98.4code
Inclusion terms
- Chronic ulcer of skin NOS
- Tropical ulcer NOS
- Ulcer of skin NOS
Index entries leading here 1
Alongside this code 7 same parent — L98.42
L98.421 Non-pressure chronic ulcer of back limited to brkdwn skin L98.422 Non-pressure chronic ulcer of back with fat layer exposed L98.423 Non-pressure chronic ulcer of back with necrosis of muscle L98.425 Non-prs chr ulcer of back with muscle invl w/o evd of necr L98.426 Non-prs chr ulcer of back with bone invl without evd of necr L98.428 Non-pressure chronic ulcer of back with oth severity L98.429 Non-pressure chronic ulcer of back with unspecified severity
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.