ICD-10 Code M02.842 – Other reactive arthropathies, left hand (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.842 – Other reactive arthropathies, left hand
What it is
M02.842 identifies a reactive arthropathy affecting the left hand. Use it when the chart documents joint inflammation in the left hand that is considered reactive rather than primary arthritis.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include joint pain, swelling, stiffness, and reduced hand motion, with evidence that the arthritis is linked to a preceding infection or reactive process.
When to use this code
Use this code when the provider specifically documents other reactive arthropathy in the left hand. It is appropriate when the condition is localized to the left hand and not described as another coded arthritis type. If laterality or the reactive nature is unclear, check documentation.
Do not use for
Do not use it for rheumatoid arthritis, osteoarthritis, gout, or unspecified hand pain. If the record does not clearly support a reactive arthropathy diagnosis, check documentation before coding.
Coding tip
Confirm both the reactive arthropathy diagnosis and the left-hand laterality in the provider note before assigning M02.842.