M66.1
Non-billableRupture of synovium
Rupture of synovium
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Rupture of synovial cyst
Includes
Conditions included under this code
- rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •rotator cuff syndromeM75.1
- rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region
- •rupture of popliteal cystM66.0
Child Codes (8)
M66.10Rupture of synovium, unspecified joint
M66.11Rupture of synovium, shoulder
M66.12Rupture of synovium, elbow
M66.13Rupture of synovium, wrist
M66.14Rupture of synovium, hand and fingers
M66.15Rupture of synovium, hip
M66.17Rupture of synovium, ankle, foot and toes
M66.18Rupture of synovium, other site
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(10)
UMLS
- Rupture of synovial cystC1394433
- Ruptured synovial cystC1394433
- Ruptured synovial cyst (morphologic abnormality)C1394433
- Rupture of synoviumC0158337
- Rupture of synovium (disorder)C0158337
- Rupture of synovium, unspecifiedC0158337
- Rupture of synovium, unspecified jointC0158337
- Synovial ruptureC0158337
- rupture of synoviumC0158337
- synovium ruptureC0158337
Frequently Asked Questions
What is the ICD-10 code for rupture of synovium?
The ICD-10-CM code for rupture of synovium is M66.1. The full clinical description is "Rupture of synovium". M66.1 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M66.1 mean?
ICD-10-CM code M66.1 represents “Rupture of synovium”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M66.1 a billable code?
No, M66.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 8 child codes under M66.1.
What chapter is M66.1 in?
M66.1 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What are the subcategories under M66.1?
M66.1 has 8 child codes, including: M66.10 (Rupture of synovium, unspecified joint), M66.11 (Rupture of synovium, shoulder), M66.12 (Rupture of synovium, elbow), M66.13 (Rupture of synovium, wrist), and 4 more.
What are the UMLS CUIs for M66.1?
M66.1 is linked to 2 UMLS Concept Unique Identifiers: C1394433, C0158337. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M66.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like rupture of synovium affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M66.1?
M66.1 maps to the ICD-11 code: FB41.1 (Spontaneous rupture of synovium).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.