`S04.012A` Injury of optic nerve, left eye, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S04.012 with 7th character A (initial encounter).

Applies from S04 Injury of cranial nerve

Applicable to

The selection of side should be based on the side of the body being affected

Code first

any associated intracranial injury (S06.-)

Code also

any associated:
open wound of head (S01.-)
skull fracture (S02.-)

7th character note

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

7th character required

A — initial encounter
D — subsequent encounter
S — sequela

Applies from S04.0 Injury of optic nerve and pathways

Use additional code

code to identify any visual field defect or blindness (H53.4-, H54.-)

Applies from S04.01 Injury of optic nerve

Applicable to

Injury of 2nd cranial nerve

Code annotations containing back-references to S04.012A

Back-references to S04.0

Type 2 Excludes: S05 Injury of eye and orbit ("2nd cranial [optic] nerve injury (S04.0-)")

Back-references to S04

Code Also: G96.00 Cerebrospinal fluid leak, unspecified ("head injury (S00-S09)")
Code Also: G96.08 Other cranial cerebrospinal fluid leak ("head injury (S00 - S09)")
Code Also: G96.09 Other spinal cerebrospinal fluid leak ("head injury (S00 - S09)")
Code Also: S01 Open wound of head ("injury of cranial nerve (S04.-)")

Nearby codes

S04.011 Injury of optic nerve, right eye
S04.011A Injury of optic nerve, right eye, initial encounter
S04.011D Injury of optic nerve, right eye, subsequent encounter
S04.011S Injury of optic nerve, right eye, sequela
S04.012 Injury of optic nerve, left eye
S04.012A Injury of optic nerve, left eye, initial encounter (this code)
S04.012D Injury of optic nerve, left eye, subsequent encounter
S04.012S Injury of optic nerve, left eye, sequela
S04.019 Injury of optic nerve, unspecified eye
S04.019A Injury of optic nerve, unspecified eye, initial encounter
S04.019D Injury of optic nerve, unspecified eye, subsequent encounter