ICD-10-CM > L00-L99 > L80-L99 > L89 > L89.3 > L89.31 > L89.313 L89.313 Pressure ulcer of right buttock, stage 3 Billable/Specific Copy Code Copy Description Applicable To Healing pressure ulcer of right buttock, stage 3Pressure ulcer with full thickness skin loss involving damage or necrosis of subcutaneous tissue, right buttock