H33.199 – Other retinoschisis and retinal cysts, unspecified eye

ICD-10-CM 2027 diagnosis code · Disorders of choroid and retina

Billable code

ICD-10-CM code H33.199

Code: H33.199 (claims format: H33199)
Description: Other retinoschisis and retinal cysts, unspecified eye
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 7. Diseases of the eye and adnexa (H00-H59)
Block: H30-H36 Disorders of choroid and retina
Parent codes: H33 › H33.1 › H33.19

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

H33 – Retinal detachments and breaks

Excludes1 (not coded here):

detachment of retinal pigment epithelium (H35.72-, H35.73-)

H33.1 – Retinoschisis and retinal cysts

Excludes1 (not coded here):

congenital retinoschisis (Q14.1)
microcystoid degeneration of retina (H35.42-)

H33.19 – Other retinoschisis and retinal cysts

Applicable to:

Pseudocyst of retina

Related codes in H33.19

Frequently asked questions

What is ICD-10 code H33.199?

H33.199 is the ICD-10-CM code for other retinoschisis and retinal cysts, unspecified eye, in the block H30-H36 (Disorders of choroid and retina).

Is H33.199 a billable code?

Yes. H33.199 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does H33.199 belong to?

It belongs to category H33 – Retinal detachments and breaks.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.