ICD-10 Code M01.X19 – Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M01.X19 – Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhere
What it is
This code identifies a direct infection involving the unspecified shoulder joint that occurs as part of another infectious or parasitic disease. Use it when the shoulder infection is documented as secondary to a condition classified elsewhere.
Clinical signs
Typical findings include shoulder pain, swelling, warmth, and limited range of motion. Clinical features vary; refer to documentation, and confirm that the infection is described as directly involving the shoulder.
When to use this code
Use this code when the record states the shoulder is infected and the cause is an infectious or parasitic disease classified elsewhere. It may appear in notes describing septic or infectious arthritis of the shoulder when the provider links it to another infection. Check documentation for laterality and whether the shoulder is specified.
Do not use for
Do not use this code for traumatic shoulder pain, degenerative joint disease, or nonspecific inflammation without infection. If the infection is not documented as involving the shoulder directly, check documentation.
Coding tip
Verify the underlying infectious or parasitic diagnosis first, then code the shoulder infection only when the provider clearly documents the causal relationship.