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 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
- 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
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.
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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.