2026 ICD-10-CM Diagnosis Code H47.612Cortical blindness, left side of brain

ICD-10-CM Codes›H00–H59›H46-H47›H47

ICD-10-CM H47.612
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H47.612 is a billable ICD-10-CM diagnosis code for cortical blindness, left side of brain. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as bilateral cortical blindness of brain. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neuro-ophthalmology.

Code Identity

ICD-10-CM Code
H47.612
Billable Status
Yes — Valid for Submission
Code Describes
Cortical blindness, left side of brain
Short Description
Cortical blindness, left side of brain
Same as the full description in the CMS dataset.
Parent Code
H47.61
Cortical blindness

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH46-H47Disorders of optic nerve and visual pathways
CategoryH47Other disorders of optic [2nd] nerve and visual pathways
This CodeH47.612Cortical blindness, left side of brain

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral cortical blindness of brain
  • Cortical blindness
  • Cortical blindness of left side of brain
  • Cortical blindness of right side of brain

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Blindness(acquired) (congenital) (both eyes)
      • cortical
        • left brain
    • Disorder(of)
      • visual
        • cortex
          • blindness
            • left brain

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE006
Neuro-ophthalmology
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Cortical Blindness

    visual impairment due to visual cortex dysfunction.

Patient EducationClinical

Vision Impairment and Blindness

Vision impairment is the loss of vision. It includes blindness, which means that you have lost all or most of your sight. It also includes low vision, which means you have some vision, but the vision loss makes it hard to do everyday activities. You may have trouble reading, shopping, cooking, writing, and watching TV.

The full article covers:

  • What is vision impairment?
  • What causes vision impairment?
  • How is vision impairment diagnosed?
  • What are the types of low vision?
  • What are the treatments for low vision?
  • How can I make the most of my remaining sight?
  • Can vision impairment be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert H47.612 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
377.75 Cortical blindness
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H47.612Overview

Is H47.612 (Cortical blindness) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report cortical blindness, left side of brain on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of H47.612?

Under the General Equivalence Mappings, cortical blindness, left side of brain converts to ICD-9-CM 377.75 (cortical blindness). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.