M77
Header — not billable
Other enthesopathies
Other enthesopathies
M77 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
M77.8
Other enthesopathies, not elsewhere classified
M77.9 Enthesopathy at a peripheral site that does not map to any more specific code in the M77 category — covering elbow, wrist, carpus, forearm, hand, upper arm, pelvis, and multi-site presentations not classified elsewhere.
Enthesopathy, unspecified
M77.9 captures enthesopathy — pathology at a tendon, ligament, or joint capsule insertion site — when the specific anatomic location and laterality are not documented or cannot yet be determined.
Inclusion & exclusion notes
Excludes 1 (mutually exclusive — never code together)
- bursitis NOS (M71.9-)
Excludes 2 (not included here, but may be coded together if both present)
- bursitis due to use, overuse and pressure (M70.-)
- osteophyte (M25.7)
- spinal enthesopathy (M46.0-)