Is S04.012A a billable ICD-10 code?

Yes. S04.012A (Injury of optic nerve, left eye, initial encounter) is billable and can be used for insurance claims. Always verify payer-specific requirements.

S04.012A ✓ Billable

Injury of optic nerve, left eye, initial encounter

Q: What is ICD-10 code S04.012A?

ICD-10-CM code S04.012A stands for "Injury of optic nerve, left eye, initial encounter". It is a billable code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes

Code

S04.012A

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Injury, Poisoning and Certain Other Consequences of External Causes

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code S04.012A?

ICD-10-CM code S04.012A represents Injury of optic nerve, left eye, initial encounter. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.

Is S04.012A billable?

Yes. S04.012A is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is S04.012A in?

S04.012A belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.

Related codes in the S04 category

S04 Injury of cranial nerve Non-billable S04.0 Injury of optic nerve and pathways Non-billable S04.1 Injury of oculomotor nerve Non-billable S04.2 Injury of trochlear nerve Non-billable S04.3 Injury of trigeminal nerve Non-billable S04.4 Injury of abducent nerve Non-billable S04.5 Injury of facial nerve Non-billable S04.6 Injury of acoustic nerve Non-billable

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