Flexion deformity, knee
Non-billable header
M21.26 is a non-billable header code. Use one of the more specific codes below.
Inclusion terms
Includes (from M21)
- Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- arthropathic psoriasis (L40.5-) (from M21)
- certain conditions originating in the perinatal period (P04-P96) (from M21)
- certain infectious and parasitic diseases (A00-B99) (from M21)
- compartment syndrome (traumatic) (T79.A-) (from M21)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M21)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M21)
- endocrine, nutritional and metabolic diseases (E00-E88) (from M21)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from M21)
- neoplasms (C00-D49) (from M21)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M21)
- joints of the spine (M40-M54) (from M21)
- acquired deformities of fingers or toes (M20.-) (from M21)
- coxa plana (M91.2) (from M21)
Also known as
- Deformity, limb, flexion, knee