M23.91
BillableUnspecified internal derangement of right knee
Unspecified internal derangement of 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
- •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(31)
SNOMED CT
- Knee locking1126007
- Joint locking249923006
- Locked joint249923006
- Locking of joint249923006
- Bilateral derangement of knee15636251000119104
- Derangement of bilateral knees15636251000119104
- Internal derangement of bilateral knees15636251000119104
- Derangement of right knee12238951000119109
- Internal derangement of right knee12238951000119109
- Locked joint of bilateral knees15725401000119102
- Locked joint of both knees15725401000119102
- Locked joint of left knee15725481000119105
- Locked joint of right knee15725441000119100
UMLS
Clinical Terms
- Joint locking
- Bilateral derangement of knee
- Locked joint of left knee
- Internal derangement of bilateral knees
- Locking of joint
- Derangement of bilateral knees
- Locked joint of both knees
- Knee locking
- Locked joint
- Derangement of right knee (disorder)
- Derangement of right knee
- Internal derangement of right knee
- Locked joint of right knee
- Locked joint of bilateral knees
Frequently Asked Questions
What is the ICD-10 code for unspecified internal derangement of right knee?
The ICD-10-CM code for unspecified internal derangement of right knee is M23.91. The full clinical description is "Unspecified internal derangement of right knee". M23.91 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M23.91 mean?
ICD-10-CM code M23.91 represents “Unspecified internal derangement of 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 M23.91 a billable code?
Yes, M23.91 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M23.91 in?
M23.91 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M23.91?
M23.91 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 M23.91 map to?
M23.91 maps to 7 SNOMED CT concepts: 15636251000119104, 12238951000119109, 249923006, 1126007, 15725401000119102, and 2 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M23.91?
M23.91 is linked to 1 UMLS Concept Unique Identifier: C4509703. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M23.91 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified internal derangement of 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 M23.91?
There is no direct ICD-11 mapping available for M23.91 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.