ICD-10 Code L98.436 – Non-pressure chronic ulcer of abdomen with bone involvement without evidence of necrosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.436 – Non-pressure chronic ulcer of abdomen with bone involvement without evidence of necrosis
What it is
This code describes a chronic, non-pressure ulcer on the abdomen that extends to bone, with no documented necrosis. Use it when the record clearly states abdominal skin loss with bone involvement.
Clinical signs
Findings may include an open abdominal wound, exposed or affected bone, and evidence of a long-standing ulcer. Clinical features vary; refer to documentation.
When to use this code
Use L98.436 when the provider documents a chronic abdominal ulcer and specifies bone involvement without necrosis. It is appropriate for outpatient, inpatient, or wound-care records when the site is the abdomen and the ulcer is non-pressure. Check documentation if depth or tissue involvement is unclear.
Do not use for
Do not use this code for pressure ulcers, ulcers at another body site, or wounds with documented necrosis. If the chart does not confirm bone involvement, choose a more specific or less advanced ulcer code.
Coding tip
Verify the anatomic site, chronicity, and whether bone involvement is explicitly documented before assigning L98.436.