ICD-10-CM 2027 diagnosis code
H47.641Disorders of visual cortex in (due to) vascular disorders, right side of brain
H47.641 is a valid, billable ICD-10-CM code for disorders of visual cortex in (due to) vascular disorders, right side of brain. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Disord of visual cortex in vasc disord, right side of brain
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About H47.641
H47.641 is the ICD-10-CM diagnosis code for disorders of visual cortex in (due to) vascular disorders, right side of brain. It belongs to category H47 (other disorders of optic [2nd] nerve and visual pathways), block H46-H47 (disorders of optic nerve and visual pathways) and chapter 7 (diseases of the eye and adnexa). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within H47.64 (disorders of visual cortex in (due to) vascular disorders), H47.641 is specifically for disorders of visual cortex in (due to) vascular disorders, right side of brain. Related codes cover left side of brain (H47.642) and unspecified side of brain (H47.649).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 377.72 (disorders of visual cortex associated with vascular disorders).
Notes that apply from higher levels
Instructions written at a parent level also apply to H47.641.
› From H47.6 Disorders of visual cortex
- injury to visual cortex S04.04-
- underlying condition
Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to H47.641.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 01 · Diseases and Disorders of the Nervous System
ICD-9-CM equivalent
Converter →- 377.72Disorders of visual cortex associated with vascular disordersapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about H47.641
Is H47.641 billable?
- Yes. H47.641 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H47.641 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H47.641 as a principal diagnosis.
Is H47.641 a CC or MCC?
- H47.641 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does H47.641 group to?
- H47.641 is used in the MS-DRG v44.0 logic for MS-DRG 091 (Other Disorders of Nervous System with MCC), MS-DRG 092 (Other Disorders of Nervous System with CC) and MS-DRG 093 (Other Disorders of Nervous System without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for H47.641?
- The CMS General Equivalence Mappings map H47.641 to ICD-9-CM 377.72.