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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  • H40.42X2—

    Glaucoma secondary to eye inflammation, left eye, moderate stage

  • H40.42X3—

    Glaucoma secondary to eye inflammation, left eye, severe stage

  • H40.42X4—

    Glaucoma secondary to eye inflammation, left eye, indeterminate stage

  • H40.43—

    Glaucoma secondary to eye inflammation, bilateral

  • H40.43X0—

    Glaucoma secondary to eye inflammation, bilateral, stage unspecified

  • H40.43X1—

    Glaucoma secondary to eye inflammation, bilateral, mild stage

  • H40.43X2—

    Glaucoma secondary to eye inflammation, bilateral, moderate stage

  • H40.43X3—

    Glaucoma secondary to eye inflammation, bilateral, severe stage

  • H40.43X4—

    Glaucoma secondary to eye inflammation, bilateral, indeterminate stage

  • H40.5—

    Glaucoma secondary to other eye disorders

  • H40.50—

    Glaucoma secondary to other eye disorders, unspecified eye

  • H40.50X0—

    Glaucoma secondary to other eye disorders, unspecified eye, stage unspecified

  • H40.50X1—

    Glaucoma secondary to other eye disorders, unspecified eye, mild stage

  • H40.50X2—

    Glaucoma secondary to other eye disorders, unspecified eye, moderate stage

  • H40.50X3—

    Glaucoma secondary to other eye disorders, unspecified eye, severe stage

  • H40.50X4—

    Glaucoma secondary to other eye disorders, unspecified eye, indeterminate stage

  • H40.51—

    Glaucoma secondary to other eye disorders, right eye

  • H40.51X0—

    Glaucoma secondary to other eye disorders, right eye, stage unspecified

  • H40.51X1—

    Glaucoma secondary to other eye disorders, right eye, mild stage

  • H40.51X2—

    Glaucoma secondary to other eye disorders, right eye, moderate stage

  • H40.51X3—

    Glaucoma secondary to other eye disorders, right eye, severe stage

  • H40.51X4—

    Glaucoma secondary to other eye disorders, right eye, indeterminate stage

  • H40.52—

    Glaucoma secondary to other eye disorders, left eye

  • H40.52X0—

    Glaucoma secondary to other eye disorders, left eye, stage unspecified

  • H40.52X1—

    Glaucoma secondary to other eye disorders, left eye, mild stage

  • H40.52X2—

    Glaucoma secondary to other eye disorders, left eye, moderate stage

  • H40.52X3—

    Glaucoma secondary to other eye disorders, left eye, severe stage

  • H40.52X4—

    Glaucoma secondary to other eye disorders, left eye, indeterminate stage

  • H40.53—

    Glaucoma secondary to other eye disorders, bilateral

  • H40.53X0—

    Glaucoma secondary to other eye disorders, bilateral, stage unspecified

  • H40.53X1—

    Glaucoma secondary to other eye disorders, bilateral, mild stage

  • H40.53X2—

    Glaucoma secondary to other eye disorders, bilateral, moderate stage

  • H40.53X3—

    Glaucoma secondary to other eye disorders, bilateral, severe stage

  • H40.53X4—

    Glaucoma secondary to other eye disorders, bilateral, indeterminate stage

  • H40.6—

    Glaucoma secondary to drugs

  • H40.60—

    Glaucoma secondary to drugs, unspecified eye

  • H40.60X0—

    Glaucoma secondary to drugs, unspecified eye, stage unspecified

  • H40.60X1—

    Glaucoma secondary to drugs, unspecified eye, mild stage

  • H40.60X2—

    Glaucoma secondary to drugs, unspecified eye, moderate stage

  • H40.60X3—

    Glaucoma secondary to drugs, unspecified eye, severe stage

  • H40.60X4—

    Glaucoma secondary to drugs, unspecified eye, indeterminate stage

  • H40.61—

    Glaucoma secondary to drugs, right eye

  • H40.61X0—

    Glaucoma secondary to drugs, right eye, stage unspecified

  • H40.61X1—

    Glaucoma secondary to drugs, right eye, mild stage

  • H40.61X2—

    Glaucoma secondary to drugs, right eye, moderate stage

  • H40.61X3—

    Glaucoma secondary to drugs, right eye, severe stage

  • H40.61X4—

    Glaucoma secondary to drugs, right eye, indeterminate stage

  • H40.62—

    Glaucoma secondary to drugs, left eye

  • H40.62X0—

    Glaucoma secondary to drugs, left eye, stage unspecified

  • H40.62X1—

    Glaucoma secondary to drugs, left eye, mild stage

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