All ICD10 Codes
Chapter 7

H00–H59: Diseases of the Eye and Adnexa

Diseases of the Eye and Adnexa diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
All CodesBillable Only
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Internal Codes
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  • H00|

    Hordeolum and chalazion

  • H00.0|

    Hordeolum (externum) (internum) of eyelid

  • H00.01|

    Hordeolum externum

  • H00.011|

    Hordeolum externum right upper eyelid

  • H00.012|

    Hordeolum externum right lower eyelid

  • H00.013|

    Hordeolum externum right eye, unspecified eyelid

  • H00.014|

    Hordeolum externum left upper eyelid

  • H00.015|

    Hordeolum externum left lower eyelid

  • H00.016|

    Hordeolum externum left eye, unspecified eyelid

  • H00.019|

    Hordeolum externum unspecified eye, unspecified eyelid

  • H00.02|

    Hordeolum internum

  • H00.021|

    Hordeolum internum right upper eyelid

  • H00.022|

    Hordeolum internum right lower eyelid

  • H00.023|

    Hordeolum internum right eye, unspecified eyelid

  • H00.024|

    Hordeolum internum left upper eyelid

  • H00.025|

    Hordeolum internum left lower eyelid

  • H00.026|

    Hordeolum internum left eye, unspecified eyelid

  • H00.029|

    Hordeolum internum unspecified eye, unspecified eyelid

  • H00.03|

    Abscess of eyelid

  • H00.031|

    Abscess of right upper eyelid

  • H00.032|

    Abscess of right lower eyelid

  • H00.033|

    Abscess of eyelid right eye, unspecified eyelid

  • H00.034|

    Abscess of left upper eyelid

  • H00.035|

    Abscess of left lower eyelid

  • H00.036|

    Abscess of eyelid left eye, unspecified eyelid

  • H00.039|

    Abscess of eyelid unspecified eye, unspecified eyelid

  • H00.1|

    Chalazion

  • H00.11|

    Chalazion right upper eyelid

  • H00.12|

    Chalazion right lower eyelid

  • H00.13|

    Chalazion right eye, unspecified eyelid

  • H00.14|

    Chalazion left upper eyelid

  • H00.15|

    Chalazion left lower eyelid

  • H00.16|

    Chalazion left eye, unspecified eyelid

  • H00.19|

    Chalazion unspecified eye, unspecified eyelid

  • H01|

    Other inflammation of eyelid

  • H01.0|

    Blepharitis

  • H01.00|

    Unspecified blepharitis

  • H01.001|

    Unspecified blepharitis right upper eyelid

  • H01.002|

    Unspecified blepharitis right lower eyelid

  • H01.003|

    Unspecified blepharitis right eye, unspecified eyelid

  • H01.004|

    Unspecified blepharitis left upper eyelid

  • H01.005|

    Unspecified blepharitis left lower eyelid

  • H01.006|

    Unspecified blepharitis left eye, unspecified eyelid

  • H01.009|

    Unspecified blepharitis unspecified eye, unspecified eyelid

  • H01.00A|

    Unspecified blepharitis right eye, upper and lower eyelids

  • H01.00B|

    Unspecified blepharitis left eye, upper and lower eyelids

  • H01.01|

    Ulcerative blepharitis

  • H01.011|

    Ulcerative blepharitis right upper eyelid

  • H01.012|

    Ulcerative blepharitis right lower eyelid

  • H01.013|

    Ulcerative blepharitis right eye, unspecified eyelid

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