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

Disorders of ocular muscles, binocular movement, accommodation and refraction
(H49-H52)

Excludes: nystagmus and other irregular eye movements ( H55 )

H49 Paralytic strabismus
Excludes: ophthalmoplegia:
· internal ( H52.5 )
· internuclear ( H51.2 )
· progressive supranuclear ( G23.1 )
H49.0 Third [oculomotor] nerve palsy
H49.1 Fourth [trochlear] nerve palsy
H49.2 Sixth [abducent] nerve palsy
H49.3 Total (external) ophthalmoplegia
H49.4 Progressive external ophthalmoplegia
H49.8 Other paralytic strabismus
External ophthalmoplegia NOS
Kearns-Sayre syndrome
H49.9 Paralytic strabismus, unspecified

H50 Other strabismus
H50.0 Convergent concomitant strabismus
Esotropia (alternating)(monocular), except intermittent
H50.1 Divergent concomitant strabismus
Exotropia (alternating)(monocular), except intermittent
H50.2 Vertical strabismus
Hypertropia
Hypotropia
H50.3 Intermittent heterotropia
Intermittent:
· esotropia
· exotropia
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(alternating)(monocular)
H50.4 Other and unspecified heterotropia
Concomitant strabismus NOS
Cyclotropia
Microtropia
Monofixation syndrome
H50.5 Heterophoria
Alternating hyperphoria
Esophoria
Exophoria
H50.6 Mechanical strabismus
Brown's sheath syndrome
Strabismus due to adhesions
Traumatic limitation of duction of eye muscle
H50.8 Other specified strabismus
Duane's syndrome
H50.9 Strabismus, unspecified

H51 Other disorders of binocular movement
H51.0 Palsy of conjugate gaze
H51.1 Convergence insufficiency and excess
H51.2 Internuclear ophthalmoplegia
H51.8 Other specified disorders of binocular movement
H51.9 Disorder of binocular movement, unspecified

H52 Disorders of refraction and accommodation
H52.0 Hypermetropia
H52.1 Myopia
Excludes: degenerative myopia ( H44.2 )
H52.2 Astigmatism
H52.3 Anisometropia and aniseikonia
H52.4 Presbyopia
H52.5 Disorders of accommodation
Internal ophthalmoplegia (complete)(total)
Paresis
Spasm
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of accommodation
H52.6 Other disorders of refraction
H52.7 Disorder of refraction, unspecified