All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter i.e.
Overproduction of thyroid-stimulating hormone
Disorders of thyroid gland
Diabetes mellitus
Other disorders of glucose regulation and pancreatic internal secretion
Disorders of other endocrine glands
Intraoperative complications of endocrine system
Malnutrition
Other nutritional deficiencies
Overweight, obesity and other hyperalimentation
Metabolic disorders
Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified