ICD-10 Code M02.29 – Postimmunization arthropathy, multiple sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.29 – Postimmunization arthropathy, multiple sites
What it is
M02.29 identifies joint inflammation or pain that develops after immunization and affects multiple sites. Use it when the record links the arthropathy to a vaccine reaction rather than another cause.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include joint pain, swelling, stiffness, or reduced range of motion in more than one joint after vaccination.
When to use this code
Use this code when the provider documents postimmunization arthropathy involving multiple joints or sites. The chart should clearly connect the arthropathy to a recent immunization. If the note describes an unrelated arthritis, another diagnosis may be more appropriate.
Do not use for
Do not use this code for nonspecific joint pain without a documented postimmunization link. Check documentation if the condition is due to infection, trauma, or another inflammatory arthritis.
Coding tip
Confirm both the vaccine association and the multiple-site involvement before assigning M02.29.