M21 Other acquired deformities of limbs

Non-billable header with 10 child codes.

Excludes1 (never code together)

• acquired absence of limb (Z89.-)
• congenital absence of limbs (Q71-Q73)
• congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)

Excludes2 (not included here)

• acquired deformities of fingers or toes (M20.-)
• coxa plana (M91.2)

Applies from M21 Other acquired deformities of limbs

Excludes1 (never code together)

• acquired absence of limb (Z89.-)
• congenital absence of limbs (Q71-Q73)
• congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)

Excludes2 (not included here)

• acquired deformities of fingers or toes (M20.-)
• coxa plana (M91.2)

Codes under M21

• 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)
• M21.4 Flat foot [pes planus] (acquired)
• M21.5 Acquired clawhand, clubhand, clawfoot and clubfoot
• M21.6 Other acquired deformities of foot
• M21.7 Unequal limb length (acquired)
• M21.8 Other specified acquired deformities of limbs
• M21.9 Unspecified acquired deformity of limb and hand

Code annotations containing back-references to M21

Back-references to M21

• Type 1 Excludes: M23 Internal derangement of knee ("deformity of knee (M21.-)")
• Type 2 Excludes: M24.5 Contracture of joint ("acquired deformities of limbs (M20-M21)")
• Type 2 Excludes: M25 Other joint disorder, not elsewhere classified ("acquired deformities of limb (M20-M21)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("acquired deformities of limbs (M20-M21)")
• Type 1 Excludes: Z89 Acquired absence of limb ("acquired deformities of limbs (M20-M21)")

Back-references to M21

• Type 1 Excludes: M23 Internal derangement of knee ("deformity of knee (M21.-)")
• Type 2 Excludes: M24.5 Contracture of joint ("acquired deformities of limbs (M20-M21)")
• Type 2 Excludes: M25 Other joint disorder, not elsewhere classified ("acquired deformities of limb (M20-M21)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("acquired deformities of limbs (M20-M21)")
• Type 1 Excludes: Z89 Acquired absence of limb ("acquired deformities of limbs (M20-M21)")

Nearby codes

• M21 Other acquired deformities of limbs (this code)
• M21.0 Valgus deformity, not elsewhere classified
• M21.00 Valgus deformity, not elsewhere classified, unspecified site
• M21.02 Valgus deformity, not elsewhere classified, elbow
• M21.021 Valgus deformity, not elsewhere classified, right elbow
• M21.022 Valgus deformity, not elsewhere classified, left elbow