H47.642 — Disorders of visual cortex in (due to) vascular disorders, left side of brain
H47.642 is a billable, specific ICD-10-CM code for disorders of visual cortex in (due to) vascular disorders, left side of brain. It is valid for submission on a claim.
Risk adjustment
H47.642 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
H47.642 is named in 14 Medicare coverage policies — 14 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53060Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
- A56551Billing and Coding: Visual Fields Testing
- A56612Billing and Coding: CT of the Head
- A56726Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
How H47.642 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to H47.642.
- Disorder›visual›cortex›due to›vascular disorder›left brain
Related codes at this level
Codes that share H47.64. If H47.642 is not quite right, the correct code is usually one of these.
Questions about H47.642
- Is H47.642 a billable ICD-10-CM code?
- Yes. H47.642 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H47.642 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of optic nerve and visual pathways (H46-H47).