ICD-10 Code M01.X59 – Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M01.X59 – Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhere
What it is
This code identifies a direct infection involving the unspecified hip joint caused by an infectious or parasitic disease classified elsewhere. Use it when the hip infection is documented as secondary to another underlying infection.
Clinical signs
Typical findings include hip pain, swelling, reduced range of motion, and difficulty bearing weight. Clinical features vary; refer to documentation for the infectious source and joint involvement.
When to use this code
Use this code when the record clearly states direct infection of the hip and links it to an infectious or parasitic condition elsewhere in the chart. It applies when the hip is unspecified and no more precise laterality or site is documented. Check documentation for the underlying cause and any additional organism or infection codes.
Do not use for
Do not use it for noninfectious hip disorders, traumatic joint problems, or primary septic arthritis without documentation of an underlying classified-elsewhere infection. Do not guess laterality or site; check documentation.
Coding tip
Always code the underlying infectious disease first or alongside this code when the chart supports a causal link.