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

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

Excl.:
nystagmus and other irregular eye movements ( H55)

H49 Paralytic strabismus

Excl.:
ophthalmoplegia:
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
Incl.:
External ophthalmoplegia NOS
Kearns-Sayre syndrome
H49.9 Paralytic strabismus, unspecified

H50 Other strabismus

H50.0 Convergent concomitant strabismus
Incl.:
Esotropia (alternating)(monocular), except intermittent
H50.1 Divergent concomitant strabismus
Incl.:
Exotropia (alternating)(monocular), except intermittent
H50.2 Vertical strabismus
Incl.:
Hypertropia
Hypotropia
H50.3 Intermittent heterotropia
Incl.:
  • Intermittent:
    • esotropia
    • exotropia
  • (alternating)(monocular)
H50.4 Other and unspecified heterotropia
Incl.:
Concomitant strabismus NOS
Cyclotropia
Microtropia
Monofixation syndrome
H50.5 Heterophoria
Incl.:
Alternating hyperphoria
Esophoria
Exophoria
H50.6 Mechanical strabismus
Incl.:
Brown sheath syndrome
Strabismus due to adhesions
Traumatic limitation of duction of eye muscle
H50.8 Other specified strabismus
Incl.:
Duane 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
Excl.:
degenerative myopia ( H44.2)
H52.2 Astigmatism
H52.3 Anisometropia and aniseikonia
H52.4 Presbyopia
H52.5 Disorders of accommodation
Incl.:
Internal ophthalmoplegia (complete)(total)
  • Paresis
  • Spasm
  • of accommodation
H52.6 Other disorders of refraction
H52.7 Disorder of refraction, unspecified