S09.312A Primary blast injury of left ear, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S09.312 with 7th character A (initial encounter).

Applies from S09 Other and unspecified injuries of head

7th character note

• The appropriate 7th character is to be added to each code from category S09

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from S09.3 Other specified and unspecified injury of middle and inner ear

Excludes1 (never code together)

• injury to ear NOS (S09.91-)

Excludes2 (not included here)

• injury to external ear (S00.4-, S01.3-, S08.1-)

Applies from S09.31 Primary blast injury of ear

Applicable to

• Blast injury of ear NOS

Code annotations containing back-references to S09.312A

Back-references to S09.31

• Type 1 Excludes: S09.2 Traumatic rupture of ear drum ("traumatic rupture of ear drum due to blast injury (S09.31-)")

Back-references to S09

• 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)")

Nearby codes

• S09.311 Primary blast injury of right ear
• S09.311A Primary blast injury of right ear, initial encounter
• S09.311D Primary blast injury of right ear, subsequent encounter
• S09.311S Primary blast injury of right ear, sequela
• S09.312 Primary blast injury of left ear
• S09.312A Primary blast injury of left ear, initial encounter (this code)
• S09.312D Primary blast injury of left ear, subsequent encounter
• S09.312S Primary blast injury of left ear, sequela
• S09.313 Primary blast injury of ear, bilateral
• S09.313A Primary blast injury of ear, bilateral, initial encounter
• S09.313D Primary blast injury of ear, bilateral, subsequent encounter