M21.27
Non-billableFlexion deformity, ankle and toes
Flexion deformity, ankle and toes
This is a header/category code. For billing purposes, use a more specific child code from the list below.
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)
- acquired deformities of fingers or toes (M20.-)
- coxa plana (M91.2)
Child Codes (3)
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for flexion deformity, ankle and toes?
The ICD-10-CM code for flexion deformity, ankle and toes is M21.27. The full clinical description is "Flexion deformity, ankle and toes". M21.27 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M21.27 mean?
ICD-10-CM code M21.27 represents "Flexion deformity, ankle and toes". 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 M21.27 a billable code?
No, M21.27 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 M21.27.
What chapter is M21.27 in?
M21.27 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M21.27?
M21.27 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).
What are the subcategories under M21.27?
M21.27 has 3 child codes, including: M21.271 (Flexion deformity, right ankle and toes), M21.272 (Flexion deformity, left ankle and toes), M21.279 (Flexion deformity, unspecified ankle and toes).
What are the UMLS CUIs for M21.27?
M21.27 is linked to 1 UMLS Concept Unique Identifier: C2894496. 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.