S04.21⚠ Requires 7th Character

Injury of trochlear nerve, right side

⚠ 7th Character Required

The appropriate 7th character is to be added to each code from category S04

This code is not valid for billing without a 7th character. Append one of the following to S04.21:

Ainitial encounterS04.21XADsubsequent encounterS04.21XDSsequelaS04.21XS

Sub-codes of S04.21(3)

S04.21 is a non-billable header. Select a sub-code to bill.

S04.21AInjury of trochlear nerve, right side, initial encounter✓ BillableS04.21DInjury of trochlear nerve, right side, subsequent encounter✓ BillableS04.21SInjury of trochlear nerve, right side, sequela✓ Billable

Code Hierarchy

┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├S00-S09Injuries to the head (S00-S09)├S04Injury of cranial nerve
└S04.21Injury of trochlear nerve, right side

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