H11.009 Unspecified pterygium of unspecified eye

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Unspecified pterygium of unspecified eye is H11.009 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
H10-H11: Disorders of conjunctiva (H10-H11)
Category H11
124 codes (95 billable)
FY2026 Status
Stable since FY2024

U.S. Hospital Utilization

  • An estimated 245 U.S. inpatient stays in 2023 included H11.009 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Glaucoma (TOC entry)

a. Glaucoma .............................................................................................................................. 48

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7.a
Assigning glaucoma codes (use as many H40 codes as needed)

Assign as many codes from category H40, Glaucoma, as needed to identify the type of glaucoma, the affected eye, and the glaucoma stage.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7.a.1

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

H11 Other disorders of conjunctiva

Related Codes in H11

H11 Other disorders of conjunctiva H11.0 Pterygium of eye H11.00 Unspecified pterygium of eye H11.001 Unspecified pterygium of right eye H11.002 Unspecified pterygium of left eye H11.003 Unspecified pterygium of eye, bilateral H11.01 Amyloid pterygium H11.011 Amyloid pterygium of right eye H11.012 Amyloid pterygium of left eye H11.013 Amyloid pterygium of eye, bilateral H11.019 Amyloid pterygium of unspecified eye H11.02 Central pterygium of eye H11.021 Central pterygium of right eye H11.022 Central pterygium of left eye H11.023 Central pterygium of eye, bilateral H11.029 Central pterygium of unspecified eye H11.03 Double pterygium of eye H11.031 Double pterygium of right eye H11.032 Double pterygium of left eye H11.033 Double pterygium of eye, bilateral
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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