ICD-10 Code M02.271 – Postimmunization arthropathy, right ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.271 – Postimmunization arthropathy, right ankle and foot
What it is
This code identifies joint inflammation in the right ankle and foot that is documented as occurring after immunization. Use it when the provider links the arthropathy to a vaccine reaction.
Clinical signs
Clinical features vary; refer to documentation. Typical charting may note pain, swelling, stiffness, or reduced motion in the right ankle or foot after vaccination, with no better alternative diagnosis recorded.
When to use this code
Use M02.271 when the record clearly states postimmunization arthropathy and specifies the right ankle and foot. You should also use it when the provider documents an arthropathy attributed to immunization, even if the onset is delayed. Check documentation if laterality or causal linkage is unclear.
Do not use for
Do not use this code for nonspecific joint pain, arthritis from other causes, or vaccine-related reactions without documented arthropathy. If the right-sided site is not specified, Check documentation.
Coding tip
Verify both the postimmunization cause and the right ankle/foot location before assigning M02.271.