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 649 Disorders of visual cortex in (due to) vascular disorders, unspecified side of brain
 * H47.9 Unspecified disorder of visual pathways

=Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52)=
 * Excludes2: nystagmus and other irregular eye movements (H55)

H49 Paralytic strabismus

 * Excludes2: internal ophthalmoplegia (H52.51-)
 * internuclear ophthalmoplegia (H51.2-)
 * progressive supranuclear ophthalmoplegia (G23.1)
 * H49.0 Third [oculomotor] nerve palsy
 * H49.00 Third [oculomotor] nerve palsy, unspecified eye
 * H49.01 Third [oculomotor] nerve palsy, right eye
 * H49.02 Third [oculomotor] nerve palsy, left eye
 * H49.03 Third [oculomotor] nerve palsy, bilateral
 * H49.1 Fourth [trochlear] nerve palsy
 * H49.10 Fourth [trochlear] nerve palsy, unspecified eye
 * H49.11 Fourth [trochlear] nerve palsy, right eye
 * H49.12 Fourth [trochlear] nerve palsy, left eye
 * H49.13 Fourth [trochlear] nerve palsy, bilateral
 * H49.2 Sixth [abducent] nerve palsy
 * H49.20 Sixth [abducent] nerve palsy, unspecified eye
 * H49.21 Sixth [abducent] nerve palsy, right eye
 * H49.22 Sixth [abducent] nerve palsy, left eye
 * H49.23 Sixth [abducent] nerve palsy, bilateral
 * H49.3 Total (external) ophthalmoplegia
 * H49.30 Total (external) ophthalmoplegia, unspecified eye
 * H49.31 Total (external) ophthalmoplegia, right eye
 * H49.32 Total (external) ophthalmoplegia, left eye
 * H49.33 Total (external) ophthalmoplegia, bilateral
 * H49.4 Progressive external ophthalmoplegia
 * Excludes1: Kearns-Sayre syndrome (H49.81-)
 * H49.40 Progressive external ophthalmoplegia, unspecified eye
 * H49.41 Progressive external ophthalmoplegia, right eye
 * H49.42 Progressive external ophthalmoplegia, left eye
 * H49.43 Progressive external ophthalmoplegia, bilateral
 * H49.8 Other paralytic strabismus
 * H49.81 Kearns-Sayre syndrome
 * Progressive external ophthalmoplegia with pigmentary retinopathy
 * Use additional code for other manifestation, such as:
 * heart block (I45.9)
 * H49.