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 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
- 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
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.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.