M21

The ICD-10-CM code for other acquired deformities of limbs is M21. The full clinical description is "Other acquired deformities of limbs". M21 is a non-billable header code. Use a more specific child code for billing purposes.

ICD-10-CM code M21 represents “Other acquired deformities of limbs”. 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.

No, M21 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under M21.

M21 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).

M21 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).

M21 has 10 child codes, including: M21.0 (Valgus deformity, not elsewhere classified), M21.1 (Varus deformity, not elsewhere classified), M21.2 (Flexion deformity), M21.3 (Wrist or foot drop (acquired)), and 6 more.

M21 is linked to 1 UMLS Concept Unique Identifier: C0158463. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other acquired deformities of limbs affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

M21 maps to the ICD-11 code: FA31.Z (Acquired deformities of limbs, unspecified).