M20.03

M20.03: Swan-neck deformity

Non-billable headerICD-10-CM

M20.03 is a non-billable header ICD-10-CM code for swan-neck deformity. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above M20.03

A category’s note binds every code beneath it.

Written on M20.0: Deformity of finger(s)

clubbing of fingers (R68.3)
palmar fascial fibromatosis [Dupuytren] (M72.0)
trigger finger (M65.3)

Written on M20: Acquired deformities of fingers and toes

acquired absence of fingers and toes (Z89.-)
congenital absence of fingers and toes (Q71.3-, Q72.3-)
congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M20.03

3 child codes. Green means billable.

M20.031Swan-neck deformity of right finger(s)
M20.032Swan-neck deformity of left finger(s)
M20.039Swan-neck deformity of unspecified finger(s)

Other codes under M20.0

M20.00Unspecified deformity of finger(s)
M20.01Mallet finger
M20.02Boutonniere deformity
M20.09Other deformity of finger(s)