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)
Internal Codes
  • H50.04

    Monocular esotropia with other noncomitancies

  • H50.041

    Monocular esotropia with other noncomitancies, right eye

  • H50.042

    Monocular esotropia with other noncomitancies, left eye

  • H50.05

    Alternating esotropia

  • H50.06

    Alternating esotropia with A pattern

  • H50.07

    Alternating esotropia with V pattern

  • H50.08

    Alternating esotropia with other noncomitancies

  • H50.1

    Exotropia

  • H50.10

    Unspecified exotropia

  • H50.11

    Monocular exotropia

  • H50.111

    Monocular exotropia, right eye

  • H50.112

    Monocular exotropia, left eye

  • H50.12

    Monocular exotropia with A pattern

  • H50.121

    Monocular exotropia with A pattern, right eye

  • H50.122

    Monocular exotropia with A pattern, left eye

  • H50.13

    Monocular exotropia with V pattern

  • H50.131

    Monocular exotropia with V pattern, right eye

  • H50.132

    Monocular exotropia with V pattern, left eye

  • H50.14

    Monocular exotropia with other noncomitancies

  • H50.141

    Monocular exotropia with other noncomitancies, right eye

  • H50.142

    Monocular exotropia with other noncomitancies, left eye

  • H50.15

    Alternating exotropia

  • H50.16

    Alternating exotropia with A pattern

  • H50.17

    Alternating exotropia with V pattern

  • H50.18

    Alternating exotropia with other noncomitancies

  • H50.2

    Vertical strabismus

  • H50.21

    Vertical strabismus, right eye

  • H50.22

    Vertical strabismus, left eye

  • H50.3

    Intermittent heterotropia

  • H50.30

    Unspecified intermittent heterotropia

  • H50.31

    Intermittent monocular esotropia

  • H50.311

    Intermittent monocular esotropia, right eye

  • H50.312

    Intermittent monocular esotropia, left eye

  • H50.32

    Intermittent alternating esotropia

  • H50.33

    Intermittent monocular exotropia

  • H50.331

    Intermittent monocular exotropia, right eye

  • H50.332

    Intermittent monocular exotropia, left eye

  • H50.34

    Intermittent alternating exotropia

  • H50.4

    Other and unspecified heterotropia

  • H50.40

    Unspecified heterotropia

  • H50.41

    Cyclotropia

  • H50.411

    Cyclotropia, right eye

  • H50.412

    Cyclotropia, left eye

  • H50.42

    Monofixation syndrome

  • H50.43

    Accommodative component in esotropia

  • H50.5

    Heterophoria

  • H50.50

    Unspecified heterophoria

  • H50.51

    Esophoria

  • H50.52

    Exophoria

  • H50.53

    Vertical heterophoria

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