S04 — Injury of cranial nerve
S04 is a non-billable header ICD-10-CM code for injury of cranial nerve. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category S04
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Code first
The underlying condition must be sequenced before this code.
- any associated intracranial injury (S06.-)
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- The selection of side should be based on the side of the body being affected
Other codes that can never be billed with S04
These codes carry an Excludes1 note pointing at S04. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S04 alone.
- H47.6Disorders of visual cortex
Risk adjustment
S04 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead S04
10 child codes. Green means billable.
- S04.0Injury of optic nerve and pathways
- S04.1Injury of oculomotor nerve
- S04.2Injury of trochlear nerve
- S04.3Injury of trigeminal nerve
- S04.4Injury of abducent nerve
- S04.5Injury of facial nerve
- S04.6Injury of acoustic nerve
- S04.7Injury of accessory nerve
- S04.8Injury of other cranial nerves
- S04.9Injury of unspecified cranial nerve
Questions about S04
- Is S04 a billable ICD-10-CM code?
- No. S04 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S04 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).