Disorders of muscles

Historical Changes

• •FY 2025: Routine maintenance updates with minor terminology clarifications
• •FY 2024: Enhanced specificity requirements for certain code ranges
• •FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

• •Proposed updates pending review by Coordination and Maintenance Committee
• •Under consideration: Enhanced digital health integration codes

Implementation Guidance

• •Review all FY 2026 updates for M60-M63 codes before implementation
• •Always verify the most current codes in the ICD-10-CM manual
• •Ensure clinical documentation supports the selected diagnosis codes
• +3 more guidance items...

Key Usage Points:

• •M60-M63 codes are used for muscle disorders, not for injuries, which have their own codes.
• •M60 codes are used for myositis, M61 for calcification and ossification of muscle, M62 for other disorders of muscle, and M63 for disorders of muscle in diseases classified elsewhere.
• •Always code to the highest level of specificity.
• •Remember to code any underlying conditions or associated complications.
• •Use additional codes to identify any infectious agents in myositis.

When to Use:

• ✓When a patient presents with muscle inflammation or infection.
• ✓When a patient has calcification or ossification of muscle.
• ✓When a patient has a muscle disorder not classified elsewhere.
• ✓When a patient has a muscle disorder due to a systemic disease.

When NOT to Use:

• ✗When a patient has a muscle injury, not a disorder.
• ✗When a patient has a neurological or nerve disorder affecting the muscles.
• ✗When a patient has a bone disorder affecting the muscles.
• ✗When a patient has a disorder of the connective tissue.

Common Documentation Errors:

• ⚠Not specifying the exact muscle disorder
• ⚠Not documenting the location of the disorder
• ⚠Not documenting underlying conditions or complications
• ⚠Not including the cause of the disorder, if known