M23.021
BillableCystic meniscus, posterior horn of medial meniscus, r knee
Cystic meniscus, posterior horn of medial meniscus, 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 psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- joints of the spine (M40-M54)
- current injury - see injury of knee and lower leg (S80-S89)
- recurrent dislocation or subluxation of joints (M24.4)
- recurrent dislocation or subluxation of patella (M22.0-M22.1)
Also Known As / Clinical Terms
SNOMED CT
- Cyst of medial meniscus202083009
- Cyst of posterior horn of medial meniscus of knee1255428004
- Bilateral cyst of meniscus of knees15975141000119102
- Cyst of meniscus of bilateral knees15975141000119102
- Cyst of meniscus of both knees15975141000119102
- Cyst of medial meniscus of left knee16891571000119103
- Cyst of medial meniscus of right knee296141000119104
- Cyst of meniscus of left knee296151000119102
- Cyst of meniscus of right knee296161000119100
- Cyst of posterior horn of left medial meniscus305721000119108
- Cyst of posterior horn of medial meniscus of left knee305721000119108
- Cyst of posterior horn of medial meniscus of bilateral knees15975061000119102
- Cyst of posterior horn of medial meniscus of both knees15975061000119102
- Cyst of posterior horn of medial meniscus of right knee305731000119106
- Cyst of posterior horn of right medial meniscus305731000119106
- Mass of bilateral knee joints15744841000119103
- Mass of both knee joints15744841000119103
Frequently Asked Questions
What is the ICD-10 code for cystic meniscus, posterior horn of medial meniscus, r knee?
The ICD-10-CM code for cystic meniscus, posterior horn of medial meniscus, r knee is M23.021. The full clinical description is "Cystic meniscus, posterior horn of medial meniscus, right knee". M23.021 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M23.021 mean?
ICD-10-CM code M23.021 represents "Cystic meniscus, posterior horn of medial meniscus, 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 M23.021 a billable code?
Yes, M23.021 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M23.021 in?
M23.021 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M23.021?
M23.021 has Excludes1 notes indicating codes that cannot be used together with it, including: ankylosis (M24.66); deformity of knee (M21.-); osteochondritis dissecans (M93.2).
What SNOMED CT codes does M23.021 map to?
M23.021 maps to 11 SNOMED CT concepts: 15975141000119102, 202083009, 16891571000119103, 296141000119104, 296151000119102, and 6 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M23.021?
M23.021 is linked to 1 UMLS Concept Unique Identifier: C2894611. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.