ICD-10-CM > S00-T88 > T80-T88 > T84 > T84.0 > T84.03 > T84.033 T84.033 Mechanical loosening of internal left knee prosthetic joint Non-Billable/Non-Specific Codes T84.033A..., initial encounterT84.033D..., subsequent encounterT84.033S..., sequela