Rupture of synovium
Non-billable header
M66.1 is a non-billable header code. Use one of the more specific codes below.
Inclusion terms
Applicable to
- Rupture of synovial cyst
Includes (from M66)
- rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength
- Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes2
Not included here — may be reported together when both conditions exist.
- rupture of popliteal cyst (M66.0)
- arthropathic psoriasis (L40.5-) (from M66)
- certain conditions originating in the perinatal period (P04-P96) (from M66)
- certain infectious and parasitic diseases (A00-B99) (from M66)
- compartment syndrome (traumatic) (T79.A-) (from M66)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M66)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M66)
- endocrine, nutritional and metabolic diseases (E00-E88) (from M66)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from M66)
- neoplasms (C00-D49) (from M66)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M66)
- rotator cuff syndrome (M75.1-) (from M66)
- rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region (from M66)
Also known as
- Rupture of synovial cyst
Parent code
- M66Spontaneous rupture of synovium and tendonHeader
More specific codes M66.1
- M66.10Rupture of synovium, unspecified jointBillable
- M66.11Rupture of synovium, shoulderHeader
- M66.12Rupture of synovium, elbowHeader
- M66.13Rupture of synovium, wristHeader
- M66.14Rupture of synovium, hand and fingersHeader
- M66.15Rupture of synovium, hipHeader
- M66.17Rupture of synovium, ankle, foot and toesHeader
- M66.18Rupture of synovium, other siteBillable