M21.16
Non-billableVarus deformity, not elsewhere classified, knee
Varus deformity, not elsewhere classified, knee
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Bow leg
- Genu varum
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)
- acquired deformities of fingers or toes (M20.-)
- coxa plana (M91.2)
Child Codes (3)
Also Known As / Clinical Terms
UMLS
- Bandy leggedC0544755
- Bow LegC0544755
- Bow LegsC0544755
- Bow legC0544755
- Bow leggedC0544755
- Bow legsC0544755
- Bowed LegsC0544755
- Bowed legsC0544755
- BowlegC0544755
- Genu VarumC0544755
- Genu VarusC0544755
- Genu varaC0544755
- Genu varumC0544755
- Genu varusC0544755
- Genua varaC0544755
- Knee joint varus deformityC0544755
- Knee joint varus deformity (finding)C0544755
- Leg, BowC0544755
- Legs, BowC0544755
- Outward bow-leggednessC0544755
- Outward bowing at kneesC0544755
- bandy legC0544755
- bandy leggedC0544755
- bandy legsC0544755
- bow legC0544755
- bow leggedC0544755
- bow legsC0544755
- bowed legC0544755
- bowed legsC0544755
- bowing legsC0544755
- bowing of legC0544755
- bowlegC0544755
- bowlegsC0544755
- genu varumC0544755
- genu varusC0544755
- Varus deformity, not elsewhere classified, kneeC2894472
- Varus deformity, not elsewhere classified, unspecified kneeC2894472
Frequently Asked Questions
What is the ICD-10 code for varus deformity, not elsewhere classified, knee?
The ICD-10-CM code for varus deformity, not elsewhere classified, knee is M21.16. The full clinical description is "Varus deformity, not elsewhere classified, knee". M21.16 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M21.16 mean?
ICD-10-CM code M21.16 represents "Varus deformity, not elsewhere classified, knee". It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M21.16 a billable code?
No, M21.16 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under M21.16.
What chapter is M21.16 in?
M21.16 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M21.16?
M21.16 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired absence of limb (Z89.-); congenital absence of limbs (Q71-Q73); congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74); and 2 more.
What are the subcategories under M21.16?
M21.16 has 3 child codes, including: M21.161 (Varus deformity, not elsewhere classified, right knee), M21.162 (Varus deformity, not elsewhere classified, left knee), M21.169 (Varus deformity, not elsewhere classified, unspecified knee).
What are the UMLS CUIs for M21.16?
M21.16 is linked to 2 UMLS Concept Unique Identifiers: C0544755, C2894472. 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.