ICD-10 Code B05.4 – Measles with intestinal complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B05.4 – Measles with intestinal complications
What it is
B05.4 identifies measles complicated by intestinal involvement. Use it when the record documents measles with gastrointestinal complications rather than uncomplicated measles.
Clinical signs
Clinical features vary; refer to documentation. Measles typically includes fever, cough, coryza, conjunctivitis, and rash, with added intestinal symptoms or complications noted by the clinician.
When to use this code
Use this code when the provider documents measles and specifies an intestinal complication, such as enteritis or other gastrointestinal involvement. Code the condition only when the complication is clearly linked to measles in the record. Check documentation if the chart mentions measles with abdominal symptoms but does not name a complication.
Do not use for
Do not use B05.4 for uncomplicated measles or for nonspecific gastrointestinal symptoms without documented measles-related intestinal complication. Do not assign it if another diagnosis explains the intestinal findings.
Coding tip
Confirm the link between measles and the intestinal complication before coding, and query the provider when the documentation is unclear.