ICD-10 Code M02.262 – Postimmunization arthropathy, left knee (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.262 – Postimmunization arthropathy, left knee
What it is
M02.262 identifies arthropathy affecting the left knee that occurs after immunization. Use it when the record links the joint problem to a prior vaccine reaction and specifies the left knee.
Clinical signs
Typical findings include knee pain, swelling, stiffness, and reduced range of motion after immunization. Clinical features vary; refer to documentation for the timing and the provider’s causal statement.
When to use this code
Use this code when the clinician documents postimmunization arthropathy in the left knee or clearly states that the vaccine reaction caused the knee joint disorder. It is appropriate when the laterality is documented as left. If the note only says “joint pain after vaccination,” check documentation before coding this diagnosis.
Do not use for
Do not use this code for nonspecific arm soreness, routine post-vaccine discomfort, or knee pain without a documented arthropathy diagnosis. Do not assign it if the affected side is not left.
Coding tip
Verify both the postimmunization cause and left-knee laterality in the provider note before assigning M02.262.