M23.50
BillableChronic instability of knee, unspecified knee
Chronic instability of knee, unspecified 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
- •joints of the spineM40-M54
- •current injury - see injury of knee and lower legS80-S89
- •recurrent dislocation or subluxation of jointsM24.4
- •recurrent dislocation or subluxation of patellaM22.0-M22.1
Related Codes(2)
Also Known As / Clinical Terms(82)
SNOMED CT
- Old disruption of ligament of knee14949009
- Old disruption of ligament of knee other than collateral AND/OR cruciate ligaments56458007
- Old disruption of lateral collateral ligament202108004
- Old lateral collateral ligament disruption202108004
- Old disruption of medial collateral ligament202109007
- Old medial collateral ligament disruption202109007
- Old anterior cruciate ligament disruption202110002
- Old disruption of anterior cruciate ligament202110002
- Old posterior cruciate ligament disruption202111003
- Old capsular knee ligament disruption202112005
- Old disruption of capsular ligament of knee202112005
- Old complete tear lateral collateral ligament202116008
- Old partial tear medial collateral ligament202118009
- Old complete tear medial collateral ligament202119001
- Old medial capsular complex tear202120007
- Old complete tear anterior cruciate ligament202122004
- Chronic instability of knee203597000
- Complete tear, knee ligament209625000
- Complete tear, knee, medial collateral ligament209627008
- Complete tear, knee, anterior cruciate ligament209629006
- ACL - Anterior cruciate ligament deficiency239724009
- Deficiency of anterior cruciate ligament239724009
- ACL - Anterior cruciate ligament rupture239725005
- Anterior cruciate ligament rupture239725005
- Rupture of anterior cruciate ligament239725005
- Tear of anterior cruciate ligament239725005
- Deficiency of posterior cruciate ligament239726006
- PCL - Posterior cruciate ligament deficiency239726006
- Deficiency of medial collateral ligament of knee239728007
- MCL (medial collateral ligament) deficiency of knee239728007
- MCL - Medial collateral ligament rupture of the knee239729004
- Rupture of medial collateral ligament of knee239729004
- Tear of medial collateral ligament of knee joint239729004
- Deficiency of lateral collateral ligament of the knee239730009
- LCL - Lateral collateral ligament deficiency of the knee239730009
- LCL - Lateral collateral ligament rupture of the knee239731008
- Rupture of lateral collateral ligament of knee239731008
- Tear of lateral collateral ligament of knee joint239731008
- Chronic instability of joint239744003
UMLS
Clinical Terms
- Old lateral collateral ligament disruption
- Complete tear, knee ligament
- Chronic instability of knee
- Chronic instability of joint
- MCL - Medial collateral ligament rupture of the knee
- Old disruption of ligament of knee other than collateral AND/OR cruciate ligaments
- Old disruption of ligament of knee
- Chronic instability of knee (finding)
- Tear of medial collateral ligament of knee joint
- Old complete tear medial collateral ligament
- Deficiency of posterior cruciate ligament
- Rupture of lateral collateral ligament of knee
- ACL - Anterior cruciate ligament rupture
- Deficiency of medial collateral ligament of knee
- Old partial tear medial collateral ligament
- Complete tear, knee, anterior cruciate ligament
- MCL (medial collateral ligament) deficiency of knee
- Old medial collateral ligament disruption
- Old disruption of capsular ligament of knee
- Tear of lateral collateral ligament of knee joint
- PCL - Posterior cruciate ligament deficiency
- Old complete tear lateral collateral ligament
- Deficiency of lateral collateral ligament of the knee
- Old capsular knee ligament disruption
- LCL - Lateral collateral ligament deficiency of the knee
- Anterior cruciate ligament rupture
- Complete tear, knee, medial collateral ligament
- Tear of anterior cruciate ligament
- Deficiency of anterior cruciate ligament
- Old disruption of anterior cruciate ligament
- LCL - Lateral collateral ligament rupture of the knee
- Old medial capsular complex tear
- ACL - Anterior cruciate ligament deficiency
- Rupture of anterior cruciate ligament
- Old disruption of medial collateral ligament
- Old complete tear anterior cruciate ligament
- Old posterior cruciate ligament disruption
- Rupture of medial collateral ligament of knee
- Old anterior cruciate ligament disruption
- Old disruption of lateral collateral ligament
Frequently Asked Questions
What is the ICD-10 code for chronic instability of knee, unspecified knee?
The ICD-10-CM code for chronic instability of knee, unspecified knee is M23.50. The full clinical description is "Chronic instability of knee, unspecified knee". M23.50 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M23.50 mean?
ICD-10-CM code M23.50 represents “Chronic instability of knee, unspecified 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 M23.50 a billable code?
Yes, M23.50 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M23.50 in?
M23.50 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M23.50?
M23.50 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 M23.50 map to?
M23.50 maps to 24 SNOMED CT concepts: 239724009, 239725005, 239744003, 203597000, 209625000, and 19 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M23.50?
M23.50 is linked to 1 UMLS Concept Unique Identifier: C0451820. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M23.50 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like chronic instability of knee, unspecified 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 M23.50?
There is no direct ICD-11 mapping available for M23.50 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.