ICD-10 Code M00.84 – Arthritis due to other bacteria, hand (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.84 – Arthritis due to other bacteria, hand
What it is
This code identifies bacterial arthritis affecting the hand joints, caused by organisms other than the usual specific categories. Use it when the record documents an infectious arthritis in the hand due to other bacteria.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include joint pain, swelling, warmth, and limited motion in the hand, with evidence of bacterial joint infection.
When to use this code
Use this code when the provider documents arthritis of a hand joint caused by other bacteria and the site is clearly the hand. It applies to infectious arthritis, not to degenerative or inflammatory arthritis. If the organism is named, confirm that it fits this category before coding.
Do not use for
Do not use this code for arthritis in other joints, or for noninfectious arthritis such as osteoarthritis or rheumatoid arthritis. If documentation does not support bacterial infection, check documentation.
Coding tip
Code the hand site exactly as documented and verify the infectious cause before assigning M00.84.