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Chapter 7: Diseases of the eye and adnexa (H00-H59)

Code Range: H00 — H59 12 Sections FY 2026

This chapter of the ICD-10-CM classification covers diagnosis codes from H00 through H59. Browse the sections below to find specific diagnosis codes within this chapter.

Chapter Notes

  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Excludes2 (not included here):

  • 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)

Sections

  • H00-H05 Disorders of eyelid, lacrimal system and orbit (H00-H05)
    704 codes
  • H10-H11 Disorders of conjunctiva (H10-H11)
    219 codes
  • H15-H22 Disorders of sclera, cornea, iris and ciliary body (H15-H22)
    646 codes
  • H25-H28 Disorders of lens (H25-H28)
    156 codes
  • H30-H36 Disorders of choroid and retina (H30-H36)
    478 codes
  • H40-H42 Glaucoma (H40-H42)
    130 codes
  • H43-H44 Disorders of vitreous body and globe (H43-H44)
    245 codes
  • H46-H47 Disorders of optic nerve and visual pathways (H46-H47)
    122 codes
  • H49-H52 Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52)
    203 codes
  • H53-H54 Visual disturbances and blindness (H53-H54)
    182 codes
  • H55-H57 Other disorders of eye and adnexa (H55-H57)
    43 codes
  • H59 Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified (H59)
    88 codes

Top-Level Codes in This Chapter

  • H00 Hordeolum and chalazion
  • H01 Other inflammation of eyelid
  • H02 Other disorders of eyelid
  • H04 Disorders of lacrimal system
  • H05 Disorders of orbit
  • H10 Conjunctivitis
  • H11 Other disorders of conjunctiva
  • H15 Disorders of sclera
  • H16 Keratitis
  • H17 Corneal scars and opacities
  • H18 Other disorders of cornea
  • H20 Iridocyclitis
  • H21 Other disorders of iris and ciliary body
  • H22 Disorders of iris and ciliary body in diseases classified elsewhere Billable
  • H25 Age-related cataract
  • H26 Other cataract
  • H27 Other disorders of lens
  • H28 Cataract in diseases classified elsewhere Billable
  • H30 Chorioretinal inflammation
  • H31 Other disorders of choroid
  • H32 Chorioretinal disorders in diseases classified elsewhere Billable
  • H33 Retinal detachments and breaks
  • H34 Retinal vascular occlusions
  • H35 Other retinal disorders
  • H36 Retinal disorders in diseases classified elsewhere
  • H40 Glaucoma
  • H42 Glaucoma in diseases classified elsewhere Billable
  • H43 Disorders of vitreous body
  • H44 Disorders of globe
  • H46 Optic neuritis
  • H47 Other disorders of optic [2nd] nerve and visual pathways
  • H49 Paralytic strabismus
  • H50 Other strabismus
  • H51 Other disorders of binocular movement
  • H52 Disorders of refraction and accommodation
  • H53 Visual disturbances
  • H54 Blindness and low vision
  • H55 Nystagmus and other irregular eye movements
  • H57 Other disorders of eye and adnexa
  • H59 Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified

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