ICD-10 Code M02.27 – Postimmunization arthropathy, ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.27 – Postimmunization arthropathy, ankle and foot
What it is
M02.27 identifies arthropathy affecting the ankle and foot that occurs after immunization. Use it for a joint reaction documented as postimmunization, not for routine vaccine side effects.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include joint pain, swelling, stiffness, or reduced range of motion in the ankle or foot after a vaccine-related event.
When to use this code
Use M02.27 when the provider clearly links the ankle or foot arthropathy to a prior immunization. The record should support a postimmunization joint disorder rather than a nonspecific musculoskeletal complaint. If the affected joint is not documented, check documentation before coding.
Do not use for
Do not use this code for local injection-site soreness, generalized vaccine reactions, or unrelated arthritis. If the chart does not identify a postimmunization cause, choose the more specific documented diagnosis.
Coding tip
Confirm both the postimmunization cause and the involved joint site before assigning M02.27.