ICD-10-CM > N00-N99 > N80-N98 > N80 > N80.C > N80.C1 N80.C1 Endometriosis of the anterior abdominal wall Non-Billable/Non-Specific Codes N80.C10Endometriosis of the anterior abdominal wall, subcutaneous tissueN80.C11Endometriosis of the anterior abdominal wall, fascia and muscular layersN80.C19Endometriosis of the anterior abdominal wall, unspecified depth