ICD-10-CM Diagnosis Code (2025)
Official Description for H16
Keratitis
Coding Notes & Guidelines for H16
Excludes1: Not Coded Here
Sjögren's syndrome (M35.01)
Excludes1: Not Coded Here
vernal conjunctivitis without limbar and corneal involvement (H10.44)
Inclusion Terms
- Areolar keratitis
- Nummular keratitis
- Stellate keratitis
- Striate keratitis
Inclusion Terms
- Snow blindness
- Welders keratitis
Inclusion Terms
Superficial keratitis with conjunctivitis NOS
Inclusion Terms
Cogan's syndrome
Child Codes (More Specific Codes for H16):
H16.0 - Corneal ulcer
H16.00 - Unspecified corneal ulcer
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
H16.01 - Central corneal ulcer
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
H16.02 - Ring corneal ulcer
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
H16.03 - Corneal ulcer with hypopyon
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
H16.04 - Marginal corneal ulcer
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
H16.05 - Mooren's corneal ulcer
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
H16.06 - Mycotic corneal ulcer
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
H16.07 - Perforated corneal ulcer
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
H16.1 - Other and unspecified superficial keratitis without conjunctivitis
H16.10 - Unspecified superficial keratitis
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
H16.11 - Macular keratitis
H16.111 - Macular keratitis, right eye
H16.112 - Macular keratitis, left eye
H16.113 - Macular keratitis, bilateral
H16.119 - Macular keratitis, unspecified eye
H16.12 - Filamentary keratitis
H16.121 - Filamentary keratitis, right eye
H16.122 - Filamentary keratitis, left eye
H16.123 - Filamentary keratitis, bilateral
H16.129 - Filamentary keratitis, unspecified eye
H16.13 - Photokeratitis
H16.131 - Photokeratitis, right eye
H16.132 - Photokeratitis, left eye
H16.133 - Photokeratitis, bilateral
H16.139 - Photokeratitis, unspecified eye
H16.14 - Punctate keratitis
H16.141 - Punctate keratitis, right eye
H16.142 - Punctate keratitis, left eye
H16.143 - Punctate keratitis, bilateral
H16.149 - Punctate keratitis, unspecified eye
H16.2 - Keratoconjunctivitis
H16.20 - Unspecified keratoconjunctivitis
H16.201 - Unspecified keratoconjunctivitis, right eye
H16.202 - Unspecified keratoconjunctivitis, left eye
H16.203 - Unspecified keratoconjunctivitis, bilateral
H16.209 - Unspecified keratoconjunctivitis, unspecified eye
H16.21 - Exposure keratoconjunctivitis
H16.211 - Exposure keratoconjunctivitis, right eye
H16.212 - Exposure keratoconjunctivitis, left eye
H16.213 - Exposure keratoconjunctivitis, bilateral
H16.219 - Exposure keratoconjunctivitis, unspecified eye
H16.22 - Keratoconjunctivitis sicca, not specified as Sjögren's
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
H16.23 - Neurotrophic keratoconjunctivitis
H16.231 - Neurotrophic keratoconjunctivitis, right eye
H16.232 - Neurotrophic keratoconjunctivitis, left eye
H16.233 - Neurotrophic keratoconjunctivitis, bilateral
H16.239 - Neurotrophic keratoconjunctivitis, unspecified eye
H16.24 - Ophthalmia nodosa
H16.241 - Ophthalmia nodosa, right eye
H16.242 - Ophthalmia nodosa, left eye
H16.243 - Ophthalmia nodosa, bilateral
H16.249 - Ophthalmia nodosa, unspecified eye
H16.25 - Phlyctenular keratoconjunctivitis
H16.251 - Phlyctenular keratoconjunctivitis, right eye
H16.252 - Phlyctenular keratoconjunctivitis, left eye
H16.253 - Phlyctenular keratoconjunctivitis, bilateral
H16.259 - Phlyctenular keratoconjunctivitis, unspecified eye
H16.26 - Vernal keratoconjunctivitis, with limbar and corneal involvement
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
H16.29 - Other keratoconjunctivitis
H16.291 - Other keratoconjunctivitis, right eye
H16.292 - Other keratoconjunctivitis, left eye
H16.293 - Other keratoconjunctivitis, bilateral
H16.299 - Other keratoconjunctivitis, unspecified eye
H16.3 - Interstitial and deep keratitis
H16.30 - Unspecified interstitial keratitis
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
H16.31 - Corneal abscess
H16.311 - Corneal abscess, right eye
H16.312 - Corneal abscess, left eye
H16.313 - Corneal abscess, bilateral
H16.319 - Corneal abscess, unspecified eye
H16.32 - Diffuse interstitial keratitis
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
H16.33 - Sclerosing keratitis
H16.331 - Sclerosing keratitis, right eye
H16.332 - Sclerosing keratitis, left eye
H16.333 - Sclerosing keratitis, bilateral
H16.339 - Sclerosing keratitis, unspecified eye
H16.39 - Other interstitial and deep keratitis
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
H16.4 - Corneal neovascularization
H16.40 - Unspecified corneal neovascularization
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
H16.41 - Ghost vessels (corneal)
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
H16.42 - Pannus (corneal)
H16.421 - Pannus (corneal), right eye
H16.422 - Pannus (corneal), left eye
H16.423 - Pannus (corneal), bilateral
H16.429 - Pannus (corneal), unspecified eye
H16.43 - Localized vascularization of cornea
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
H16.44 - Deep vascularization of cornea
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
About ICD-10-CM Code H16 (Keratitis)
ICD-10-CM code H16 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM H16 became effective on October 1, 2024.
This page provides detailed information about H16 - Keratitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Keratitis.