M21.40
BillableFlat foot [pes planus] (acquired), unspecified foot
Flat foot [pes planus] (acquired), unspecified foot
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)
Also Known As / Clinical Terms
SNOMED CT
- Acquired flaccid flat foot44480001
- Acquired flexible flat foot44480001
- Acquired non-rigid flat foot44480001
- Pes planus53226007
- Fallen arch53226007
- Flat foot53226007
- Low medial arch of foot53226007
- Talipes planus53226007
- Acquired rigid flat foot90374001
- Acquired spastic flat foot90374001
- Hypermobile flat foot203531001
- Rigid flat foot203532008
- Peroneal spastic flat foot203533003
- Acquired pes planus203534009
- Broad foot766303001
- Metatarsus latus766303001
- Spread foot766303001
- Talipes transversoplanus766303001
Frequently Asked Questions
What is the ICD-10 code for flat foot [pes planus] (acquired), unspecified foot?
The ICD-10-CM code for flat foot [pes planus] (acquired), unspecified foot is M21.40. The full clinical description is "Flat foot [pes planus] (acquired), unspecified foot". M21.40 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M21.40 mean?
ICD-10-CM code M21.40 represents "Flat foot [pes planus] (acquired), unspecified foot". 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 M21.40 a billable code?
Yes, M21.40 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M21.40 in?
M21.40 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M21.40?
M21.40 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 1 more.
What SNOMED CT codes does M21.40 map to?
M21.40 maps to 8 SNOMED CT concepts: 53226007, 44480001, 203534009, 90374001, 766303001, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M21.40?
M21.40 is linked to 1 UMLS Concept Unique Identifier: C2894503. 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.