M21.41 Flat foot [pes planus] (acquired), right foot
Instructional Notes:
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M21.41
Description: Flat foot [pes planus] (acquired), right foot
↓
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M21.4
Description: Flat foot [pes planus] (acquired)
Exclude1:
- congenital pes planus (Q66.5-)
↓
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M21
Description: Other acquired deformities of limbs
Exclude1:
- acquired absence of limb (Z89.-)
- congenital absence of limbs (Q71-Q73)
- congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)
Exclude2:
- acquired deformities of fingers or toes (M20.-)
- coxa plana (M91.2)
↓
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M20-M25
Description: Other joint disorders (M20-M25)
Exclude2:
- joints of the spine (M40-M54)
↓
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M00-M99
Description: Diseases of the musculoskeletal system and connective tissue
Exclude2:
- 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)
Notes:
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition