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
Internal Codes
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  • H21.1X1—

    Other vascular disorders of iris and ciliary body, right eye

  • H21.1X2—

    Other vascular disorders of iris and ciliary body, left eye

  • H21.1X3—

    Other vascular disorders of iris and ciliary body, bilateral

  • H21.1X9—

    Other vascular disorders of iris and ciliary body, unspecified eye

  • H21.2—

    Degeneration of iris and ciliary body

  • H21.21—

    Degeneration of chamber angle

  • H21.211—

    Degeneration of chamber angle, right eye

  • H21.212—

    Degeneration of chamber angle, left eye

  • H21.213—

    Degeneration of chamber angle, bilateral

  • H21.219—

    Degeneration of chamber angle, unspecified eye

  • H21.22—

    Degeneration of ciliary body

  • H21.221—

    Degeneration of ciliary body, right eye

  • H21.222—

    Degeneration of ciliary body, left eye

  • H21.223—

    Degeneration of ciliary body, bilateral

  • H21.229—

    Degeneration of ciliary body, unspecified eye

  • H21.23—

    Degeneration of iris (pigmentary)

  • H21.231—

    Degeneration of iris (pigmentary), right eye

  • H21.232—

    Degeneration of iris (pigmentary), left eye

  • H21.233—

    Degeneration of iris (pigmentary), bilateral

  • H21.239—

    Degeneration of iris (pigmentary), unspecified eye

  • H21.24—

    Degeneration of pupillary margin

  • H21.241—

    Degeneration of pupillary margin, right eye

  • H21.242—

    Degeneration of pupillary margin, left eye

  • H21.243—

    Degeneration of pupillary margin, bilateral

  • H21.249—

    Degeneration of pupillary margin, unspecified eye

  • H21.25—

    Iridoschisis

  • H21.251—

    Iridoschisis, right eye

  • H21.252—

    Iridoschisis, left eye

  • H21.253—

    Iridoschisis, bilateral

  • H21.259—

    Iridoschisis, unspecified eye

  • H21.26—

    Iris atrophy (essential) (progressive)

  • H21.261—

    Iris atrophy (essential) (progressive), right eye

  • H21.262—

    Iris atrophy (essential) (progressive), left eye

  • H21.263—

    Iris atrophy (essential) (progressive), bilateral

  • H21.269—

    Iris atrophy (essential) (progressive), unspecified eye

  • H21.27—

    Miotic pupillary cyst

  • H21.271—

    Miotic pupillary cyst, right eye

  • H21.272—

    Miotic pupillary cyst, left eye

  • H21.273—

    Miotic pupillary cyst, bilateral

  • H21.279—

    Miotic pupillary cyst, unspecified eye

  • H21.29—

    Other iris atrophy

  • H21.3—

    Cyst of iris, ciliary body and anterior chamber

  • H21.30—

    Idiopathic cysts of iris, ciliary body or anterior chamber

  • H21.301—

    Idiopathic cysts of iris, ciliary body or anterior chamber, right eye

  • H21.302—

    Idiopathic cysts of iris, ciliary body or anterior chamber, left eye

  • H21.303—

    Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral

  • H21.309—

    Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye

  • H21.31—

    Exudative cysts of iris or anterior chamber

  • H21.311—

    Exudative cysts of iris or anterior chamber, right eye

  • H21.312—

    Exudative cysts of iris or anterior chamber, left eye

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