Endometriosis (N80) ICD-10-CM

About the N80 Code Range

ICD-10 code section N80 is specifically used to classify various forms and locations of endometriosis, a condition where tissue similar to the uterine lining grows outside the uterus. This section helps healthcare providers accurately specify the site and depth of endometriosis to guide treatment and documentation.

The codes under N80 cover endometriosis affecting multiple pelvic organs like the uterus (endometriosis of uterus, adenomyosis), ovaries (including terms like chocolate cyst or endometrioma), fallopian tubes, pelvic peritoneum, and other regions including intestines, bladder, ureters, and even cardiothoracic areas. For example, N80.00 covers unspecified endometriosis of the uterus, while N80.101 represents endometriosis of the right ovary, sometimes called a chocolate cyst. The section further distinguishes between superficial and deep forms at each site, important for treatment choices. Coders will find specific synonyms helpful to map common names to precise codes, such as adenomyosis linked with N80.03 and superficial endometriosis of the ovary with N80.111. Accurate use of these codes enhances clarity in documenting the complex presentations of endometriosis.