MCMCB Pro
H30.042

H30.042Focal chorioretinal inflammation, macular or paramacular, left eye

Billable / specific codeICD-10-CMleft

H30.042 is a billable, specific ICD-10-CM code for focal chorioretinal inflammation, macular or paramacular, left eye. It is valid for submission on a claim.

Risk adjustment

H30.042 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

H30.042 is named in 20 Medicare coverage policies 20 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
  • A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
  • A56551Billing and Coding: Visual Fields Testing
  • A56672Billing and Coding: Electroretinography (ERG)

Related codes at this level

Codes that share H30.04. If H30.042 is not quite right, the correct code is usually one of these.

Questions about H30.042

Is H30.042 a billable ICD-10-CM code?
Yes. H30.042 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H30.042 sit in the tabular list?
Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.