M65.2 vs M75.3
M65.2 and M75.3 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on M65.2
calcified tendinitis of shoulder (M75.3)
M65.2
Calcific tendinitis
Not billable
- Chapter 13
- Diseases of the musculoskeletal system and connective tissue
- Section
- M65-M67
Indexed under
- Tendinitis, tendonitis › calcific
M75.3
Calcific tendinitis of shoulder
Not billable
- Chapter 13
- Diseases of the musculoskeletal system and connective tissue
- Section
- M70-M79
Use when the record says
- Calcified bursa of shoulder
Indexed under
- Calcification › bursa › shoulder
- Tendinitis, tendonitis › calcific › shoulder
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027