Other calcification of muscle, other site

This code signifies the presence of abnormal calcium deposits within muscle tissue in an unspecified anatomical location other than the hand, foot, or multiple sites. This calcification is not due to myositis ossificans traumatica or progressive myositis ossificans. It represents a non-specific form of muscle hardening due to calcium accumulation.

Use this code when documentation clearly indicates muscle calcification in a site not otherwise specified, and the etiology is not traumatic or progressive myositis ossificans. This typically applies when imaging studies (e.g., X-ray, CT scan) confirm the presence of calcium deposits within muscle tissue. Documentation should explicitly state "other site" or an unspecified location.

• Ensure the documentation specifies "other site" or an unlisted anatomical location for the muscle calcification.
• Differentiate from M61.0- (Myositis ossificans traumatica) and M61.1- (Myositis ossificans progressiva) which have specific etiologies.
• Do not use if the calcification is in the hand (M61.44-), foot (M61.47-), or multiple sites (M61.49).