`M21.9` Unspecified acquired deformity of limb and hand

Non-billable header with 6 child codes.

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 M21.9

M21.90 Unspecified acquired deformity of unspecified limb
M21.92 Unspecified acquired deformity of upper arm
M21.93 Unspecified acquired deformity of forearm
M21.94 Unspecified acquired deformity of hand
M21.95 Unspecified acquired deformity of thigh
M21.96 Unspecified acquired deformity of lower leg

Code annotations containing back-references to M21.9

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

M21.859 Other specified acquired deformities of unspecified thigh
M21.86 Other specified acquired deformities of lower leg
M21.861 Other specified acquired deformities of right lower leg
M21.862 Other specified acquired deformities of left lower leg
M21.869 Other specified acquired deformities of unspecified lower leg
M21.9 Unspecified acquired deformity of limb and hand (this code)
M21.90 Unspecified acquired deformity of unspecified limb
M21.92 Unspecified acquired deformity of upper arm
M21.921 Unspecified acquired deformity of right upper arm
M21.922 Unspecified acquired deformity of left upper arm
M21.929 Unspecified acquired deformity of unspecified upper arm