H40.40X0 — Glaucoma secondary to eye inflammation, unspecified eye, stage unspecified
H40.40X0 is a billable, specific ICD-10-CM code for glaucoma secondary to eye inflammation, unspecified eye, stage unspecified. It is valid for submission on a claim.
7th character "0" — stage unspecified
One of the following 7th characters is to be assigned to each code in subcategory H40.4 to designate the stage of glaucoma
- 0
- stage unspecified
- 1
- mild stage
- 2
- moderate stage
- 3
- severe stage
- 4
- indeterminate stage
Risk adjustment
H40.40X0 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
H40.40X0 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56799Billing and Coding: Visual Fields Testing
- A57068Billing and Coding: Ocular Photography - External
- A57071Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography)
- A57637Billing and Coding: Visual Field Examination
Related codes at this level
Codes that share H40.40. If H40.40X0 is not quite right, the correct code is usually one of these.
- H40.40X1Glaucoma secondary to eye inflammation, unspecified eye, mild stage
- H40.40X2Glaucoma secondary to eye inflammation, unspecified eye, moderate stage
- H40.40X3Glaucoma secondary to eye inflammation, unspecified eye, severe stage
- H40.40X4Glaucoma secondary to eye inflammation, unspecified eye, indeterminate stage
Questions about H40.40X0
- Is H40.40X0 a billable ICD-10-CM code?
- Yes. H40.40X0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H40.40X0 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Glaucoma (H40-H42).