ICD-10 Code M01.X5 – Direct infection of hip in infectious and parasitic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M01.X5 – Direct infection of hip in infectious and parasitic diseases classified elsewhere
What it is
This code identifies a direct infection affecting the hip joint when the underlying infectious or parasitic disease is classified elsewhere. Use it when the hip involvement is documented as secondary to another specific infection.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include hip pain, swelling, reduced range of motion, and signs of joint infection, but the causative disease should be identified in the record.
When to use this code
Use M01.X5 when the provider documents direct infection of the hip caused by an infectious or parasitic condition coded elsewhere. You should also confirm that the hip is the affected joint and that the note supports a secondary relationship.
Apply it when the chart clearly links the hip infection to the underlying disease rather than to trauma, degenerative disease, or an unspecified joint disorder. Check documentation if the source infection is not named.
Do not use for
Do not use this code for primary septic arthritis of the hip without a documented “classified elsewhere” cause. Do not assign it when the hip problem is unrelated to infection.
Coding tip
Always code the underlying infectious or parasitic disease first, then report M01.X5 for the hip involvement when documentation supports the linkage.