ICDcodes.org
FY2027

C75.9 — Malignant neoplasm of endocrine gland, unspecified

BillableUnspecifiedCC

Is C75.9 billable?

Yes, but C75.9 is an unspecified code. C75.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, C75.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting C75.9 — the more specific alternatives are listed below.

C75.9 at a glance

CodeC75.9
DescriptionMalignant neoplasm of endocrine gland, unspecified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does C75.9 group to?

C75.9 sits in MDC 10 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 643Endocrine Disorders with MCCmedical
  • 644Endocrine Disorders with CCmedical
  • 645Endocrine Disorders without CC/MCCmedical

As a secondary diagnosis, C75.9 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

Excludes1 — never code together — inherited from C75

The conditions below can never be reported together with C75.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • malignant carcinoid tumors (C7A.0-)
  • malignant neoplasm of adrenal gland (C74.-)
  • malignant neoplasm of endocrine pancreas (C25.4)
  • malignant neoplasm of islets of Langerhans (C25.4)
  • malignant neoplasm of ovary (C56.-)
  • malignant neoplasm of testis (C62.-)
  • malignant neoplasm of thymus (C37)
  • malignant neoplasm of thyroid gland (C73)
  • malignant neuroendocrine tumors (C7A.-)

How long has C75.9 existed?

C75.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the C75 family? (7)