M77.8 is the authoritative medical code for Other enthesopathies, not elsewhere classified. This classification is used in medical billing and clinical recording to specify the clinical criteria for other enthesopathies, not elsewhere classified (ICD-10-CM M77.8), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Other enthesopathies, not elsewhere classified is a billable ICD-10-CM diagnosis code M77.8. Excludes1 (not coded here): bursitis NOS M71.9-. Excludes2 (not included here): bursitis due to use, overuse and pressure M70.-; osteophyte M25.7; spinal enthesopathy M46.0-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M77.8 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- bursitis due to use, overuse and pressure M70.-
- osteophyte M25.7
- spinal enthesopathy M46.0-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with M77.8?
Per Excludes1 instructions, M77.8 must not be reported with: bursitis NOS (M71.9-).
Can M77.8 be reported alongside related conditions?
Per Excludes2 instructions, M77.8 and the following may both be reported when both are present: bursitis due to use, overuse and pressure (M70.-); osteophyte (M25.7); spinal enthesopathy (M46.0-).
Codes in This Family (26)
Official ICD-10-CM classifications in the same code family as M77.8, with their registry titles.
- M77 — Other enthesopathies
- M77.0 — Medial epicondylitis
- M77.00 — Medial epicondylitis, unspecified elbow
- M77.01 — Medial epicondylitis, right elbow
- M77.02 — Medial epicondylitis, left elbow
- M77.1 — Lateral epicondylitis
- M77.10 — Lateral epicondylitis, unspecified elbow
- M77.11 — Lateral epicondylitis, right elbow
- M77.12 — Lateral epicondylitis, left elbow
- M77.2 — Periarthritis of wrist
- M77.20 — Periarthritis, unspecified wrist
- M77.21 — Periarthritis, right wrist
- M77.22 — Periarthritis, left wrist
- M77.3 — Calcaneal spur
- M77.30 — Calcaneal spur, unspecified foot
- M77.31 — Calcaneal spur, right foot
- M77.32 — Calcaneal spur, left foot
- M77.4 — Metatarsalgia
- M77.40 — Metatarsalgia, unspecified foot
- M77.41 — Metatarsalgia, right foot
- M77.42 — Metatarsalgia, left foot
- M77.5 — Other enthesopathy of foot and ankle
- M77.50 — Other enthesopathy of unspecified foot and ankle
- M77.51 — Other enthesopathy of right foot and ankle
- M77.52 — Other enthesopathy of left foot and ankle
- M77.9 — Enthesopathy, unspecified
Indexed Clinical Terms (9)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Enthesopathy (peripheral), elbow region
- Enthesopathy (peripheral), foot NEC
- Enthesopathy (peripheral), forearm
- Enthesopathy (peripheral), hand
- Enthesopathy (peripheral), multiple sites
- Enthesopathy (peripheral), pelvis
- Enthesopathy (peripheral), specified type NEC
- Enthesopathy (peripheral), upper arm
- Enthesopathy (peripheral), wrist and carpus NEC
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code M76.8
Other specified enthesopathies of lower limb, excluding foot
ICD Code M81.8
Other osteoporosis without current pathological fracture