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M25.36

Other instability, knee

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 20 never code together
M25.3code
Excludes1
  • instability of joint secondary to old ligament injury (M24.2-)M24.2-
  • instability of joint secondary to removal of joint prosthesis (M96.8-)M96.8-
Excludes2
  • spinal instabilities (M53.2-)M53.2-
M25code
Excludes2
  • abnormality of gait and mobility (R26.-)R26.-
  • acquired deformities of limb (M20-M21)M20-M21
  • calcification of bursa (M71.4-)M71.4-
  • calcification of shoulder (joint) (M75.3)M75.3
  • calcification of tendon (M65.2-)M65.2-
  • difficulty in walking (R26.2)R26.2
  • temporomandibular joint disorder (M26.6-)M26.6-
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 2
M00-M25block
Includes
  • Disorders affecting predominantly peripheral (limb) joints
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 8 same parent — M25.3
M25.30 Other instability, unspecified joint M25.31 Other instability, shoulder category M25.32 Other instability, elbow category M25.33 Other instability, wrist category M25.34 Other instability, hand category M25.35 Other instability, hip category M25.37 Other instability, ankle and foot category M25.39 Other instability, other specified joint
Subordinate codes 3
M25.361 Other instability, right knee M25.362 Other instability, left knee M25.369 Other instability, unspecified knee
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
no
Code set
FY2026
Parent
M25.3
Block
M00-M25
Siblings
8
Subordinate
3

Present FY2024–FY2027.