M20.00 – Unspecified deformity of finger(s)

ICD-10-CM 2027 diagnosis code · Other joint disorders

Non-billable header

ICD-10-CM code M20.00
Code
M20.00 (claims format: M2000)
Description
Unspecified deformity of finger(s)
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block
M20-M25 Other joint disorders
Parent codes
M20 › M20.0

Billable codes under M20.00

M20.00 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M20 – Acquired deformities of fingers and toes

Excludes1 (not coded here):
  • 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.-)

M20.0 – Deformity of finger(s)

Excludes1 (not coded here):
  • clubbing of fingers (R68.3)
  • palmar fascial fibromatosis [Dupuytren] (M72.0)
  • trigger finger (M65.3)

Block M20-M25

Excludes2 (not included here):

Index terms for M20.00

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M20.0

Frequently asked questions

What is ICD-10 code M20.00?

M20.00 is the ICD-10-CM code for unspecified deformity of finger(s), in the block M20-M25 (Other joint disorders).

Is M20.00 a billable code?

No. M20.00 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M20.00 belong to?

It belongs to category M20 – Acquired deformities of fingers and toes.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.