H16 Keratitis

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Keratitis is H16 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
H15-H22: Disorders of sclera, cornea, iris and ciliary body (H15-H22)
Category H16
163 codes (126 billable)
FY2026 Status
Stable since FY2024

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

Cite This Page

Reference H16 with the canonical source and edition:

H16 — Keratitis. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/H16

Canonical URL: https://icd10codingpro.com/codes/H16

Related Codes

More Specific Codes

H16.0 Corneal ulcer H16.1 Other and unspecified superficial keratitis without conjunctivitis H16.2 Keratoconjunctivitis H16.3 Interstitial and deep keratitis H16.4 Corneal neovascularization H16.8 Other keratitis H16.9 Unspecified keratitis

All Codes in H16

Every most-specific code under H16 Keratitis (126 codes):

Show the complete H16 code list
H16.001 Unspecified corneal ulcer, right eye H16.002 Unspecified corneal ulcer, left eye H16.003 Unspecified corneal ulcer, bilateral H16.009 Unspecified corneal ulcer, unspecified eye H16.011 Central corneal ulcer, right eye H16.012 Central corneal ulcer, left eye H16.013 Central corneal ulcer, bilateral H16.019 Central corneal ulcer, unspecified eye H16.021 Ring corneal ulcer, right eye H16.022 Ring corneal ulcer, left eye H16.023 Ring corneal ulcer, bilateral H16.029 Ring corneal ulcer, unspecified eye H16.031 Corneal ulcer with hypopyon, right eye H16.032 Corneal ulcer with hypopyon, left eye H16.033 Corneal ulcer with hypopyon, bilateral H16.039 Corneal ulcer with hypopyon, unspecified eye H16.041 Marginal corneal ulcer, right eye H16.042 Marginal corneal ulcer, left eye H16.043 Marginal corneal ulcer, bilateral H16.049 Marginal corneal ulcer, unspecified eye H16.051 Mooren's corneal ulcer, right eye H16.052 Mooren's corneal ulcer, left eye H16.053 Mooren's corneal ulcer, bilateral H16.059 Mooren's corneal ulcer, unspecified eye H16.061 Mycotic corneal ulcer, right eye H16.062 Mycotic corneal ulcer, left eye H16.063 Mycotic corneal ulcer, bilateral H16.069 Mycotic corneal ulcer, unspecified eye H16.071 Perforated corneal ulcer, right eye H16.072 Perforated corneal ulcer, left eye H16.073 Perforated corneal ulcer, bilateral H16.079 Perforated corneal ulcer, unspecified eye H16.101 Unspecified superficial keratitis, right eye H16.102 Unspecified superficial keratitis, left eye H16.103 Unspecified superficial keratitis, bilateral H16.109 Unspecified superficial keratitis, unspecified eye H16.111 Macular keratitis, right eye H16.112 Macular keratitis, left eye H16.113 Macular keratitis, bilateral H16.119 Macular keratitis, unspecified eye H16.121 Filamentary keratitis, right eye H16.122 Filamentary keratitis, left eye H16.123 Filamentary keratitis, bilateral H16.129 Filamentary keratitis, unspecified eye H16.131 Photokeratitis, right eye H16.132 Photokeratitis, left eye H16.133 Photokeratitis, bilateral H16.139 Photokeratitis, unspecified eye H16.141 Punctate keratitis, right eye H16.142 Punctate keratitis, left eye H16.143 Punctate keratitis, bilateral H16.149 Punctate keratitis, unspecified eye H16.201 Unspecified keratoconjunctivitis, right eye H16.202 Unspecified keratoconjunctivitis, left eye H16.203 Unspecified keratoconjunctivitis, bilateral H16.209 Unspecified keratoconjunctivitis, unspecified eye H16.211 Exposure keratoconjunctivitis, right eye H16.212 Exposure keratoconjunctivitis, left eye H16.213 Exposure keratoconjunctivitis, bilateral H16.219 Exposure keratoconjunctivitis, unspecified eye H16.221 Keratoconjunctivitis sicca, not specified as Sjögren's, right eye H16.222 Keratoconjunctivitis sicca, not specified as Sjögren's, left eye H16.223 Keratoconjunctivitis sicca, not specified as Sjögren's, bilateral H16.229 Keratoconjunctivitis sicca, not specified as Sjögren's, unspecified eye H16.231 Neurotrophic keratoconjunctivitis, right eye H16.232 Neurotrophic keratoconjunctivitis, left eye H16.233 Neurotrophic keratoconjunctivitis, bilateral H16.239 Neurotrophic keratoconjunctivitis, unspecified eye H16.241 Ophthalmia nodosa, right eye H16.242 Ophthalmia nodosa, left eye H16.243 Ophthalmia nodosa, bilateral H16.249 Ophthalmia nodosa, unspecified eye H16.251 Phlyctenular keratoconjunctivitis, right eye H16.252 Phlyctenular keratoconjunctivitis, left eye H16.253 Phlyctenular keratoconjunctivitis, bilateral H16.259 Phlyctenular keratoconjunctivitis, unspecified eye H16.261 Vernal keratoconjunctivitis, with limbar and corneal involvement, right eye H16.262 Vernal keratoconjunctivitis, with limbar and corneal involvement, left eye H16.263 Vernal keratoconjunctivitis, with limbar and corneal involvement, bilateral H16.269 Vernal keratoconjunctivitis, with limbar and corneal involvement, unspecified eye H16.291 Other keratoconjunctivitis, right eye H16.292 Other keratoconjunctivitis, left eye H16.293 Other keratoconjunctivitis, bilateral H16.299 Other keratoconjunctivitis, unspecified eye H16.301 Unspecified interstitial keratitis, right eye H16.302 Unspecified interstitial keratitis, left eye H16.303 Unspecified interstitial keratitis, bilateral H16.309 Unspecified interstitial keratitis, unspecified eye H16.311 Corneal abscess, right eye H16.312 Corneal abscess, left eye H16.313 Corneal abscess, bilateral H16.319 Corneal abscess, unspecified eye H16.321 Diffuse interstitial keratitis, right eye H16.322 Diffuse interstitial keratitis, left eye H16.323 Diffuse interstitial keratitis, bilateral H16.329 Diffuse interstitial keratitis, unspecified eye H16.331 Sclerosing keratitis, right eye H16.332 Sclerosing keratitis, left eye H16.333 Sclerosing keratitis, bilateral H16.339 Sclerosing keratitis, unspecified eye H16.391 Other interstitial and deep keratitis, right eye H16.392 Other interstitial and deep keratitis, left eye H16.393 Other interstitial and deep keratitis, bilateral H16.399 Other interstitial and deep keratitis, unspecified eye H16.401 Unspecified corneal neovascularization, right eye H16.402 Unspecified corneal neovascularization, left eye H16.403 Unspecified corneal neovascularization, bilateral H16.409 Unspecified corneal neovascularization, unspecified eye H16.411 Ghost vessels (corneal), right eye H16.412 Ghost vessels (corneal), left eye H16.413 Ghost vessels (corneal), bilateral H16.419 Ghost vessels (corneal), unspecified eye H16.421 Pannus (corneal), right eye H16.422 Pannus (corneal), left eye H16.423 Pannus (corneal), bilateral H16.429 Pannus (corneal), unspecified eye H16.431 Localized vascularization of cornea, right eye H16.432 Localized vascularization of cornea, left eye H16.433 Localized vascularization of cornea, bilateral H16.439 Localized vascularization of cornea, unspecified eye H16.441 Deep vascularization of cornea, right eye H16.442 Deep vascularization of cornea, left eye H16.443 Deep vascularization of cornea, bilateral H16.449 Deep vascularization of cornea, unspecified eye H16.8 Other keratitis H16.9 Unspecified keratitis
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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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