M71.21
BillableSynovial cyst of popliteal space [Baker], right knee
Synovial cyst of popliteal space [Baker], right knee
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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
Related Codes(2)
Also Known As / Clinical Terms(25)
SNOMED CT
- Baker's cyst of knee1290249005
- Popliteal cyst1290249005
- Synovial popliteal cyst1290249005
- Synovial cyst of both popliteal spaces1290326006
- Synovial popliteal cyst of bilateral knees1290326006
- Synovial popliteal cyst of left knee1290327002
- Synovial popliteal cyst of right knee1290328007
- Mass of bilateral knee joints15744841000119103
- Mass of both knee joints15744841000119103
- Synovial cyst of bilateral knees15637591000119109
- Synovial cyst of left knee322221000119102
- Synovial cyst of right knee322231000119104
Clinical Terms
- Synovial popliteal cyst of right knee
- Mass of both knee joints
- Synovial cyst of left knee
- Mass of bilateral knee joints
- Synovial popliteal cyst of left knee
- Popliteal cyst
- Synovial popliteal cyst
- Synovial cyst of right knee
- Synovial popliteal cyst of bilateral knees
- Baker's cyst of knee
- Synovial cyst of bilateral knees
- Synovial cyst of both popliteal spaces
Frequently Asked Questions
What is the ICD-10 code for synovial cyst of popliteal space [baker], right knee?
The ICD-10-CM code for synovial cyst of popliteal space [baker], right knee is M71.21. The full clinical description is "Synovial cyst of popliteal space [Baker], right knee". M71.21 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M71.21 mean?
ICD-10-CM code M71.21 represents “Synovial cyst of popliteal space [Baker], right knee”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a billable/specific code that can be used on a claim.
Is M71.21 a billable code?
Yes, M71.21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M71.21 in?
M71.21 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M71.21?
M71.21 has Excludes1 notes indicating codes that cannot be used together with it, including: bunion (M20.1); bursitis related to use, overuse or pressure (M70.-); enthesopathies (M76-M77); and 1 more.
What SNOMED CT codes does M71.21 map to?
M71.21 maps to 8 SNOMED CT concepts: 1290249005, 15744841000119103, 15637591000119109, 1290326006, 322221000119102, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M71.21?
M71.21 is linked to 1 UMLS Concept Unique Identifier: C2896271. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M71.21 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like synovial cyst of popliteal space [baker], right knee 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 M71.21?
There is no direct ICD-11 mapping available for M71.21 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.