ICD-10 Code M01.X12 – Direct infection of left shoulder in infectious and parasitic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M01.X12 – Direct infection of left shoulder in infectious and parasitic diseases classified elsewhere
What it is
This code identifies a direct infectious process involving the left shoulder joint or surrounding structures, where the infection is classified elsewhere rather than by the joint code itself. Use it when the left shoulder is the documented site and the infectious cause is established.
Clinical signs
Typical findings include localized shoulder pain, swelling, warmth, tenderness, and reduced range of motion. Fever or systemic illness may occur, but clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents a direct infection of the left shoulder and links it to an infectious or parasitic disease classified elsewhere. It is appropriate when the provider specifies the left shoulder as the affected site. Check documentation for the underlying infectious diagnosis and laterality.
Do not use for
Do not use this code for nonspecific shoulder pain, trauma, or inflammatory arthritis without infection. If the chart does not confirm a direct infectious process in the left shoulder, check documentation.
Coding tip
Confirm both the left-side location and the underlying infection source before assigning M01.X12.