ICD-10 Code B26.3 – Mumps pancreatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B26.3 – Mumps pancreatitis
What it is
B26.3 identifies pancreatitis caused by mumps infection. Use it when the record shows pancreatic inflammation occurring as a complication of mumps.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include abdominal pain, nausea, vomiting, and evidence of pancreatic inflammation in the setting of active or recent mumps.
When to use this code
Use B26.3 when the provider documents mumps pancreatitis, mumps-related pancreatic involvement, or pancreatitis due to mumps. Code the condition only when the causal link is clearly stated or supported in the chart.
If the record mentions pancreatitis without mumps, or mumps without pancreatic involvement, you need the more specific documented diagnosis. Check documentation for the exact relationship and timing.
Do not use for
Do not assign this code for nonspecific pancreatitis, viral illness without pancreatic involvement, or suspected mumps pancreatitis that is not confirmed. Check documentation.
Coding tip
Look for explicit wording such as “due to mumps” or “mumps pancreatitis” before selecting B26.3.