ICD-10-CM 2027 diagnosis code

S64.30Injury of digital nerve of unspecified thumb

Not billable — use a more specific codeRequires 7th character

S64.30 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S64.30

S64.30 is the ICD-10-CM diagnosis code for injury of digital nerve of unspecified thumb. It belongs to category S64 (injury of nerves at wrist and hand level), block S60-S69 (injuries to the wrist, hand and fingers) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S64.3, choose S64.30 (unspecified thumb) only when documentation doesn't support a more specific option: right thumb (S64.31) and left thumb (S64.32).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category S64

Ainitial encounterS64.30XA
Dsubsequent encounterS64.30XD
SsequelaS64.30XS

Notes that apply from higher levels

Instructions written at a parent level also apply to S64.30.

› From S64 Injury of nerves at wrist and hand level

Code also

any associated open wound (S61.-)

Broader instructions also apply from S60-S69 Injuries to the wrist, hand and fingers and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about S64.30

Is S64.30 billable?: No. S64.30 is a header code. Report one of its more specific subcodes instead.