E21

Non-billable

Hyperparathyroidism and other disorders of parathyroid gland

Chapter 4: Endocrine, nutritional and metabolic diseases

Coding Guidance

E21 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.

Additional Information

From parent codes: E00-E89 (Chapter 4)

Excludes 1 — Not Coded HereFrom E00-E89

Excludes1 means 'NOT CODED HERE!' An Excludes1 note indicates mutually exclusive codes: two conditions that cannot be reported together.

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

NotesFrom E00-E89

Additional notes from parent codes that apply to this code.

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.