Unspecified fracture of skull, subsequent encounter for fracture with nonunion

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 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.

FY2007 Added to the draft code set draft Unspecified fracture of skull, subsequent encounter for fracture with nonunion

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 S02 Fracture of skull and facial bones

Seventh character required

The appropriate 7th character is to be added to each code from category S02

Code also

any associated intracranial injury (S06.-)

Note

A fracture not indicated as open or closed should be coded to closed

Inherited from the S00-S09 section Injuries to the head (S00-S09)

Excludes2 - not included here

burns and corrosions (T20-T32)
effects of foreign body in ear (T16)
effects of foreign body in larynx (T17.3)
effects of foreign body in mouth NOS (T18.0)
effects of foreign body in nose (T17.0-T17.1)
effects of foreign body in pharynx (T17.2)
effects of foreign body on external eye (T15.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Code also

for any associated infection

Includes

injuries of ear
injuries of eye
injuries of face [any part]
injuries of gum
injuries of jaw
injuries of oral cavity
injuries of palate
injuries of periocular area
injuries of scalp
injuries of temporomandibular joint area
injuries of tongue
injuries of tooth

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Fracture, traumatic > skull

Codes in the same group

Code	Description	Status
S02.91XA	Unspecified fracture of skull, initial encounter for closed fracture	Valid
S02.91XB	Unspecified fracture of skull, initial encounter for open fracture	Valid
S02.91XD	Unspecified fracture of skull, subsequent encounter for fracture with routine healing	Valid
S02.91XG	Unspecified fracture of skull, subsequent encounter for fracture with delayed healing	Valid
S02.91XS	Unspecified fracture of skull, sequela	Valid