ICD-10 Code M00.85 – Arthritis due to other bacteria, hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.85 – Arthritis due to other bacteria, hip
What it is
This code identifies bacterial arthritis affecting the hip joint when the organism is other than the common specific bacteria named in separate ICD-10 codes. It indicates an infectious joint process documented in the hip.
Clinical signs
Typical findings include acute hip pain, swelling, warmth, and reduced range of motion. Fever may occur, but clinical features vary; refer to documentation.
When to use this code
Use M00.85 when the provider documents arthritis of the hip caused by a bacterial infection and does not name a more specific organism code. You should code it from the final confirmed diagnosis, not from suspicion alone. Check documentation if the organism or laterality details are unclear.
Do not use for
Do not use this code for noninfectious arthritis, such as osteoarthritis or rheumatoid arthritis. Also avoid it when the infection is documented in another joint or when a more specific bacterial code applies.
Coding tip
Confirm the hip joint and organism wording in the record before assigning M00.85.