M67.A02 (Plantar fasciitis, left foot) compared with M77.9 (Enthesopathy, unspecified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Not coded here — these two are mutually exclusive.
“tendinitis NOS (M77.9-)”
An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.
Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a
No — do not report together. M67.A02 carries an Excludes1 note covering M77.9: “tendinitis NOS (M77.9-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
| M67.A02Plantar fasciitis, left foot | M77.9Enthesopathy, unspecified | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | — | Enthesopathy, unspecified is a billable ICD-10-CM diagnosis code (M77.9). |
| Includes | — | Bone spur NOS Capsulitis NOS Periarthritis NOS Tendinitis NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources