M66.2
Non-billableSpontaneous rupture of extensor tendons
Spontaneous rupture of extensor tendons
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
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
Child Codes (10)
M66.20Spontaneous rupture of extensor tendons, unspecified site
M66.21Spontaneous rupture of extensor tendons, shoulder
M66.22Spontaneous rupture of extensor tendons, upper arm
M66.23Spontaneous rupture of extensor tendons, forearm
M66.24Spontaneous rupture of extensor tendons, hand
M66.25Spontaneous rupture of extensor tendons, thigh
M66.26Spontaneous rupture of extensor tendons, lower leg
M66.27Spontaneous rupture of extensor tendons, ankle and foot
M66.28Spontaneous rupture of extensor tendons, other site
M66.29Spontaneous rupture of extensor tendons, multiple sites
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(2)
Frequently Asked Questions
What is the ICD-10 code for spontaneous rupture of extensor tendons?
The ICD-10-CM code for spontaneous rupture of extensor tendons is M66.2. The full clinical description is "Spontaneous rupture of extensor tendons". M66.2 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M66.2 mean?
ICD-10-CM code M66.2 represents “Spontaneous rupture of extensor tendons”. 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 M66.2 a billable code?
No, M66.2 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under M66.2.
What chapter is M66.2 in?
M66.2 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What are the subcategories under M66.2?
M66.2 has 10 child codes, including: M66.20 (Spontaneous rupture of extensor tendons, unspecified site), M66.21 (Spontaneous rupture of extensor tendons, shoulder), M66.22 (Spontaneous rupture of extensor tendons, upper arm), M66.23 (Spontaneous rupture of extensor tendons, forearm), and 6 more.
What are the UMLS CUIs for M66.2?
M66.2 is linked to 1 UMLS Concept Unique Identifier: C0494977. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M66.2 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like spontaneous rupture of extensor tendons 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 M66.2?
M66.2 maps to the ICD-11 code: FB41.2 (Spontaneous rupture of tendon).
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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.