Open wound of ankle

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 6 more specific codes instead:

S91.00 Unspecified open wound of ankle (also a header)
S91.01 Laceration without foreign body of ankle (also a header)
S91.02 Laceration with foreign body of ankle (also a header)
S91.03 Puncture wound without foreign body of ankle (also a header)
S91.04 Puncture wound with foreign body of ankle (also a header)
S91.05 Open bite of ankle (also a header)

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2012 Added to the draft code set draft Open wound of ankle

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from S91 Open wound of ankle, foot and toes

Seventh character required

The appropriate 7th character is to be added to each code from category S91

Excludes1 - never coded here

open fracture of ankle, foot and toes (S92.-with 7th character B)
traumatic amputation of ankle and foot (S98.-)

Code also

any associated wound infection

Inherited from the S90-S99 section Injuries to the ankle and foot (S90-S99)

Excludes2 - not included here

burns and corrosions (T20-T32)
fracture of ankle and malleolus (S82.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Codes in the same group

Code	Description	Status
S91.1	Open wound of toe without damage to nail	Not billable
S91.2	Open wound of toe with damage to nail	Not billable
S91.3	Open wound of foot	Not billable