ICD-10-CM > S00-T88 > S30-S39 > S36 > S36.6 > S36.61 S36.61 Primary blast injury of rectum Non-Billable/Non-Specific Applicable To Blast injury of rectum NOS Codes S36.61XA..., initial encounterS36.61XD..., subsequent encounterS36.61XS..., sequela