H35.1
Non-Billable

Retinopathy of prematurity

Non-Billable / Non-Specific Code

What is Retinopathy of prematurity?

ICD-10-CM H35.1 is the diagnosis code for Retinopathy of prematurity. This code falls under the section "Disorders of choroid and retina" within Chapter 7 — Diseases of the eye and adnexa (H00-H59). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for H35.1

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where H35.1 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 8 entries
H35.10Retinopathy of prematurity, unspecifiedNon-BillableH35.101Retinopathy of prematurity, unspecified, right eyeBillableH35.102Retinopathy of prematurity, unspecified, left eyeBillableH35.103Retinopathy of prematurity, unspecified, bilateralBillableH35.109Retinopathy of prematurity, unspecified, unspecified eyeBillableH35.11Retinopathy of prematurity, stage 0Non-BillableH35.111Retinopathy of prematurity, stage 0, right eyeBillableH35.112Retinopathy of prematurity, stage 0, left eyeBillableH35.113Retinopathy of prematurity, stage 0, bilateralBillableH35.119Retinopathy of prematurity, stage 0, unspecified eyeBillableH35.12Retinopathy of prematurity, stage 1Non-BillableH35.121Retinopathy of prematurity, stage 1, right eyeBillableH35.122Retinopathy of prematurity, stage 1, left eyeBillableH35.123Retinopathy of prematurity, stage 1, bilateralBillableH35.129Retinopathy of prematurity, stage 1, unspecified eyeBillableH35.13Retinopathy of prematurity, stage 2Non-BillableH35.131Retinopathy of prematurity, stage 2, right eyeBillableH35.132Retinopathy of prematurity, stage 2, left eyeBillableH35.133Retinopathy of prematurity, stage 2, bilateralBillableH35.139Retinopathy of prematurity, stage 2, unspecified eyeBillableH35.14Retinopathy of prematurity, stage 3Non-BillableH35.141Retinopathy of prematurity, stage 3, right eyeBillableH35.142Retinopathy of prematurity, stage 3, left eyeBillableH35.143Retinopathy of prematurity, stage 3, bilateralBillableH35.149Retinopathy of prematurity, stage 3, unspecified eyeBillableH35.15Retinopathy of prematurity, stage 4Non-BillableH35.151Retinopathy of prematurity, stage 4, right eyeBillableH35.152Retinopathy of prematurity, stage 4, left eyeBillableH35.153Retinopathy of prematurity, stage 4, bilateralBillableH35.159Retinopathy of prematurity, stage 4, unspecified eyeBillableH35.16Retinopathy of prematurity, stage 5Non-BillableH35.161Retinopathy of prematurity, stage 5, right eyeBillableH35.162Retinopathy of prematurity, stage 5, left eyeBillableH35.163Retinopathy of prematurity, stage 5, bilateralBillableH35.169Retinopathy of prematurity, stage 5, unspecified eyeBillableH35.17Retrolental fibroplasiaNon-BillableH35.171Retrolental fibroplasia, right eyeBillableH35.172Retrolental fibroplasia, left eyeBillableH35.173Retrolental fibroplasia, bilateralBillableH35.179Retrolental fibroplasia, unspecified eyeBillable
Related Codes

Frequently Asked Questions

Is H35.1 a billable ICD-10-CM code?

No, H35.1 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does H35.1 mean?

H35.1 is the ICD-10-CM diagnosis code for "Retinopathy of prematurity". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of H35.1?

The parent code of H35.1 is H35 ("Other retinal disorders"). H35.1 provides a more specific classification within this category.

What section is H35.1 in?

H35.1 is located in Section H30-H36 — "Disorders of choroid and retina" within Chapter 7 of the ICD-10-CM Tabular List.

What are the sub-codes of H35.1?

H35.1 has 8 sub-code(s) that provide more specific detail: H35.10, H35.11, H35.12, H35.13, H35.14 and more.

When should I use H35.1?

Use H35.1 when the patients documented diagnosis matches "Retinopathy of prematurity" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Retinopathy of prematurity?

The ICD-10-CM code for Retinopathy of prematurity is H35.1.

Can H35.1 be used for primary diagnosis?

No, H35.1 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is H35.1 in?

H35.1 is in Chapter 7 of the ICD-10-CM Tabular List.

Is H35.1 valid for 2026?

Yes, H35.1 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousH35.09Other intraretinal microvascular abnormalitiesNext →H35.10Retinopathy of prematurity, unspecified
Code Details
H35.1
Retinopathy of prematurity
Non-Billable / Non-Specific Code
7 — Diseases of the eye and adnexa (H00-H59)
H30-H36 — Disorders of choroid and retina
2026 ICD-10-CM