H50.5 HeterophoriaNon-billable header with 6 child codes.
H50.50 Unspecified heterophoriaH50.51 EsophoriaH50.52 ExophoriaH50.53 Vertical heterophoriaH50.54 CyclophoriaH50.55 Alternating heterophoriaH53.03 Strabismic amblyopia ("strabismus (H50.-)")