ICD-10 Code M00.851 – Arthritis due to other bacteria, right hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.851 – Arthritis due to other bacteria, right hip
What it is
This code identifies bacterial arthritis affecting the right hip joint when the organism is not otherwise specified in a more exact code. It indicates an infectious joint process, not simple joint pain or degenerative disease.
Clinical signs
Typical findings include acute hip pain, warmth, swelling, limited range of motion, and difficulty bearing weight. Fever or elevated inflammatory markers may occur, but clinical features vary; refer to documentation.
When to use this code
Use M00.851 when the provider documents septic or infectious arthritis of the right hip caused by bacteria other than organisms with a more specific ICD-10 code. It fits confirmed infection of the joint, whether based on aspiration, culture, or clear clinical assessment. Check documentation if the note only says “arthritis” without infection details.
Do not use for
Do not use this code for osteoarthritis, rheumatoid arthritis, or unspecified hip pain. Also avoid it when the record identifies a different joint, a viral cause, or a more specific organism code.
Coding tip
Verify the right hip laterality and the documented bacterial cause before assigning M00.851.