DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M77 Other enthesopathies

  • Header · not billable

M77 is not billable. The category heads 20 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

  • Metatarsalgia → M77.4-
  • Enthesopathy (peripheral) → M77.9
  • Spur, bonecalcaneal → M77.3-

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M70-M79 Other soft tissue disorders (M70-M79)
  3. M77 Other enthesopathies
Billable codes
20
Subdivisions
8
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
18

Codes in M77

  1. M77.0
    Medial epicondylitis
    Header
  2. M77.00
    Medial epicondylitis, unspecified elbow
    Billable
  3. M77.01
    Medial epicondylitis, right elbow
    Billable
  4. M77.02
    Medial epicondylitis, left elbow
    Billable
  5. M77.1
    Lateral epicondylitis
    Header
    Inclusion terms 1

    Inclusion terms

    • Tennis elbow
  6. M77.10
    Lateral epicondylitis, unspecified elbow
    Billable
  7. M77.11
    Lateral epicondylitis, right elbow
    Billable
  8. M77.12
    Lateral epicondylitis, left elbow
    Billable
  9. M77.2
    Periarthritis of wrist
    Header
  10. M77.20
    Periarthritis, unspecified wrist
    Billable
  11. M77.21
    Periarthritis, right wrist
    Billable
  12. M77.22
    Periarthritis, left wrist
    Billable
  13. M77.3
    Calcaneal spur
    Header
  14. M77.30
    Calcaneal spur, unspecified foot
    Billable
  15. M77.31
    Calcaneal spur, right foot
    Billable
  16. M77.32
    Calcaneal spur, left foot
    Billable
  17. M77.4
    Metatarsalgia
    Header
    Excludes1 1

    Excludes1

    • Morton's metatarsalgia (G57.6) G57.6
  18. M77.40
    Metatarsalgia, unspecified foot
    Billable
  19. M77.41
    Metatarsalgia, right foot
    Billable
  20. M77.42
    Metatarsalgia, left foot
    Billable
  21. M77.5
    Other enthesopathy of foot and ankle
    Header
  22. M77.50
    Other enthesopathy of unspecified foot and ankle
    Billable
  23. M77.51
    Other enthesopathy of right foot and ankle
    Billable
  24. M77.52
    Other enthesopathy of left foot and ankle
    Billable
  25. M77.8
    Other enthesopathies, not elsewhere classified
    Billable
  26. M77.9
    Enthesopathy, unspecified
    Billable
    Inclusion terms 4

    Inclusion terms

    • Bone spur NOS
    • Capsulitis NOS
    • Periarthritis NOS
    • Tendinitis NOS

Sources of each column.

Instructions

At M77

Excludes1

  • bursitis NOS (M71.9-) M71.9

Excludes2

  • bursitis due to use, overuse and pressure (M70.-) M70
  • osteophyte (M25.7) M25.7
  • spinal enthesopathy (M46.0-) M46.0

Notes that also apply

Chapter 13 instructions (Notes 1, Excludes2 10): printed on the chapter 13 page.

Index entries

  • Metatarsalgia → M77.4-
  • Enthesopathy (peripheral) → M77.9
  • Epicondylitis (elbow)medial → M77.0-
  • Epicondylitis (elbow)lateral → M77.1-
  • Periarthritis (joint)wrist → M77.2-
  • Spur, bonecalcaneal → M77.3-
  • Enthesopathy (peripheral)ankle and tarsus → M77.5-
  • Enthesopathy (peripheral)elbow region → M77.8
  • Enthesopathy (peripheral)foot NEC → M77.8
  • Enthesopathy (peripheral)forearm → M77.8
  • Enthesopathy (peripheral)hand → M77.8
  • Enthesopathy (peripheral)multiple sites → M77.8
  • Enthesopathy (peripheral)pelvis → M77.8
  • Enthesopathy (peripheral)specified type NEC → M77.8
  • Enthesopathy (peripheral)upper arm → M77.8
  • Enthesopathy (peripheral)wrist and carpus NEC → M77.8
  • Enthesopathy (peripheral)foot NECspecified type NEC → M77.5-
  • Enthesopathy (peripheral)lower limb (excluding foot)ankle and tarsus → M77.5-

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy