ICD-10-CM > S00-T88 > T66-T78 > T75 > T75.8 T75.8 Other specified effects of external causes Non-Billable/Non-Specific Codes T75.81Effects of abnormal gravitation [G] forcesT75.81XA..., initial encounterT75.81XD..., subsequent encounterT75.81XS..., sequelaT75.82Effects of weightlessnessT75.82XA..., initial encounterT75.82XD..., subsequent encounterT75.82XS..., sequelaT75.83Effects of war theaterT75.830Gulf war illnessT75.830A..., initial encounterT75.830D..., subsequent encounterT75.830S..., sequelaT75.838Effects of other war theaterT75.838A..., initial encounterT75.838D..., subsequent encounterT75.838S..., sequelaT75.89Other specified effects of external causesT75.89XA..., initial encounterT75.89XD..., subsequent encounterT75.89XS..., sequela