DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C71 Malignant neoplasm of brain

  • Header · not billable

C71 is not billable. The category heads 10 billable codes in FY2027: the 10 codes directly below it.

Index → code

  • Gliomatosis cerebri → C71.0
  • Sarcoma (of)cerebellar → C71.6
  • Astrogliomaunspecified site → C71.9

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C69-C72 Malignant neoplasms of eye, brain and other parts of central nervous system (C69-C72)
  3. C71 Malignant neoplasm of brain
Billable codes
10
Subdivisions
10
CC / MCC codes
10 / 0
HCC V28 codes
10
New FY2027
0
Index entries
39

Codes in C71

  1. C71.0
    Malignant neoplasm of cerebrum, except lobes and ventricles
    BillableCC20
    Inclusion terms 1

    Inclusion terms

    • Malignant neoplasm of supratentorial NOS
  2. C71.1
    Malignant neoplasm of frontal lobe
    BillableCC20
  3. C71.2
    Malignant neoplasm of temporal lobe
    BillableCC20
  4. C71.3
    Malignant neoplasm of parietal lobe
    BillableCC20
  5. C71.4
    Malignant neoplasm of occipital lobe
    BillableCC20
  6. C71.5
    Malignant neoplasm of cerebral ventricle
    BillableCC20
    Excludes1 1

    Excludes1

    • malignant neoplasm of fourth cerebral ventricle (C71.7) C71.7
  7. C71.6
    Malignant neoplasm of cerebellum
    BillableCC20
  8. C71.7
    Malignant neoplasm of brain stem
    BillableCC20
    Inclusion terms 2

    Inclusion terms

    • Malignant neoplasm of fourth cerebral ventricle
    • Infratentorial malignant neoplasm NOS
  9. C71.8
    Malignant neoplasm of overlapping sites of brain
    BillableCC20
  10. C71.9
    Malignant neoplasm of brain, unspecified
    BillableCC20

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At C71

Excludes1

  • malignant neoplasm of cranial nerves (C72.2-C72.5) C72.2 C72.5
  • retrobulbar malignant neoplasm (C69.6-) C69.6

Notes that also apply

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Index entries

  • Gliomatosis cerebri → C71.0
  • Medulloblastomadesmoplastic → C71.6
  • Medulloblastomaunspecified site → C71.6
  • Medullomyoblastomaunspecified site → C71.6
  • Sarcoma (of)cerebellar → C71.6
  • Sarcoma (of)circumscribed (arachnoidal) cerebellar → C71.6
  • Astroblastomaunspecified site → C71.9
  • Astrocytoma (cystic)unspecified site → C71.9
  • Astrogliomaunspecified site → C71.9
  • Ependymoblastomaunspecified site → C71.9
  • Ependymoma (epithelial) (malignant)unspecified site → C71.9
  • Gemistocytomaunspecified site → C71.9
  • Glioblastoma (multiforme)unspecified site → C71.9
  • Glioma (malignant)unspecified site → C71.9
  • Gliosarcomaunspecified site → C71.9
  • Oligoastrocytomaunspecified site → C71.9
  • Oligodendroblastomaunspecified site → C71.9
  • Oligodendrogliomaunspecified site → C71.9
  • Spongioblastoma (any type)unspecified site → C71.9
  • Xanthoastrocytomaunspecified site → C71.9
  • Papillomachoroid plexus (lateral ventricle) (third ventricle)anaplastic → C71.5
  • Papillomachoroid plexus (lateral ventricle) (third ventricle)malignant → C71.5
  • Sarcoma (of)cerebellarcircumscribed (arachnoidal) → C71.6
  • Astrocytoma (cystic)anaplasticunspecified site → C71.9
  • Astrocytoma (cystic)fibrillaryunspecified site → C71.9
  • Astrocytoma (cystic)fibrousunspecified site → C71.9
  • Astrocytoma (cystic)gemistocyticunspecified site → C71.9
  • Astrocytoma (cystic)juvenileunspecified site → C71.9
  • Astrocytoma (cystic)pilocyticunspecified site → C71.9
  • Astrocytoma (cystic)piloidunspecified site → C71.9
  • Astrocytoma (cystic)protoplasmicunspecified site → C71.9
  • Ependymoma (epithelial) (malignant)anaplasticunspecified site → C71.9
  • Glioblastoma (multiforme)with sarcomatous componentunspecified site → C71.9
  • Glioblastoma (multiforme)giant cellunspecified site → C71.9
  • Glioma (malignant)astrocyticunspecified site → C71.9
  • Glioma (malignant)mixedunspecified site → C71.9
  • Oligodendrogliomaanaplastic typeunspecified site → C71.9
  • Sarcoma (of)monstrocellularunspecified site → C71.9
  • Tumorneuroectodermal (peripheral)primitiveunspecified site → C71.9

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy