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M65.10

Other infective (teno)synovitis, unspecified site

Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 9 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.
Exclusions 13 never code together
M65code
Excludes1
  • chronic crepitant synovitis of hand and wrist (M70.0-)M70.0-
  • current injury - see injury of ligament or tendon by body region
  • soft tissue disorders related to use, overuse and pressure (M70.-)M70.-
M00-M99chapter
Excludes2
  • arthropathic psoriasis (L40.5-)L40.5-
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • compartment syndrome (traumatic) (T79.A-)T79.A-
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 1
M00-M99chapter
Notes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here 1
Alongside this code 9 same parent — M65.1
M65.11 Other infective (teno)synovitis, shoulder category M65.12 Other infective (teno)synovitis, elbow category M65.13 Other infective (teno)synovitis, wrist category M65.14 Other infective (teno)synovitis, hand category M65.15 Other infective (teno)synovitis, hip category M65.16 Other infective (teno)synovitis, knee category M65.17 Other infective (teno)synovitis, ankle and foot category M65.18 Other infective (teno)synovitis, other site M65.19 Other infective (teno)synovitis, multiple sites
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
M65.1
Block
M60-M79
Siblings
9

Present FY2024–FY2027.