D44.6 Neoplasm of uncertain behavior of carotid body

Billable ICD-10-CM code, FY2026.

Applies from D44 Neoplasm of uncertain behavior of endocrine glands

Excludes1 (never code together)

• multiple endocrine adenomatosis (E31.2-)
• multiple endocrine neoplasia (E31.2-)
• neoplasm of uncertain behavior of endocrine pancreas (D37.8)
• neoplasm of uncertain behavior of ovary (D39.1-)
• neoplasm of uncertain behavior of testis (D40.1-)
• neoplasm of uncertain behavior of thymus (D38.4)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 23 — Prostate, Breast, and Other Cancers and Tumors
• CMS-HCC V22: HCC 12 — Breast, Prostate, and Other Cancers and Tumors
• RxHCC V08: HCC 22 — Prostate, Breast, Bladder, and Other Cancers and Tumors
• ESRD V24: HCC 12

MS-DRG index

Defines the logic of DRG(s) 054-055 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 237.3 Neoplasm of uncertain behavior of paraganglia (approximate)

Code annotations containing back-references to D44.6

Back-references to D44

• Type 1 Excludes: D49 Neoplasms of unspecified behavior ("neoplasms of uncertain behavior (D37-D44, D48)")

Diagnosis Index entries for D44.6

• Paraganglioma › carotid body
• Tumor › carotid body

Nearby codes

• D44.12 Neoplasm of uncertain behavior of left adrenal gland
• D44.2 Neoplasm of uncertain behavior of parathyroid gland
• D44.3 Neoplasm of uncertain behavior of pituitary gland
• D44.4 Neoplasm of uncertain behavior of craniopharyngeal duct
• D44.5 Neoplasm of uncertain behavior of pineal gland
• D44.6 Neoplasm of uncertain behavior of carotid body (this code)
• D44.7 Neoplasm of uncertain behavior of aortic body and other paraganglia
• D44.9 Neoplasm of uncertain behavior of unspecified endocrine gland