D44.4

Billable

Neoplasm of uncertain behavior of craniopharyngeal duct

HCC Category Mapping

V28HCC 23 — Melanoma and Other Skin Cancers

0.251

V24HCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.150

ESRDHCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.000

RxHCCHCC 22 — Cancer, Other Specified Sites

0.000

What This Code Means

A tumor of the craniopharyngeal duct (a remnant structure near the pituitary gland) with uncertain behavior.

Coding Tips

•This code is used for craniopharyngeal duct cysts or tumors with uncertain malignant potential
•Distinguish from Rathke's cleft cysts which may be coded differently based on clinical context

Clinical Significance

Neoplasms of uncertain behavior of the craniopharyngeal duct typically represent craniopharyngiomas, which are slow-growing tumors arising from Rathke pouch remnants near the pituitary gland. While histologically benign, these tumors exhibit locally aggressive behavior with high recurrence rates and can cause significant endocrine dysfunction and visual impairment.

Documentation Requirements

✓Documentation should specify the craniopharyngeal duct or Rathke pouch origin, supported by sellar/suprasellar imaging.
✓Pathology should confirm the tumor type (adamantinomatous versus papillary) and uncertain behavior features.
✓Document visual field deficits, pituitary hormone levels, and any hydrocephalus from the tumor.

Commonly Confused Codes

D44.3 (uncertain behavior of pituitary gland) involves the pituitary gland itself rather than the craniopharyngeal duct.D35.2 (benign neoplasm of pituitary gland) is for typical pituitary adenomas.Rathke cleft cysts are non-neoplastic and typically coded differently from craniopharyngiomas.

Code Hierarchy

└D44Neoplasm of uncertain behavior of endocrine glands └D44.4Neoplasm of uncertain behavior of craniopharyngeal duct

└D44.4Neoplasm of uncertain behavior of craniopharyngeal duct