D49.6

Billable
ChapterC00–D49
Ranksubcategory
Official Description

Neoplasm of unspecified behavior of brain

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 2: Neoplasms (C00-D49).

Instructional Notes

Excludes1(Not coded here)
  • neoplasm of unspecified behavior of cerebral meninges (D49.7)
  • neoplasm of unspecified behavior of cranial nerves (D49.7)
General instructions are available for the parent sections:
View D49 Notes

Clinical Hierarchy

CH2Neoplasms (C00-D49)
D49Neoplasms of unspecified behavior
D49.6Neoplasm of unspecified behavior of brain

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to D49.6:

categoryD49
Neoplasms of unspecified behavior
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to D49.6. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Degeneration, degenerative1 unique routes
brain (cortical) (progressive)
in
neoplastic disease→D49.6
Neoplasm, neoplastic24 unique routes
basal ganglia→D49.6
basis pedunculi→D49.6
brain NEC→D49.6(22 variants)
basal ganglia→D49.6
cerebellopontine angle→D49.6
cerebellum NOS→D49.6
cerebrum→D49.6
choroid plexus→D49.6
corpus callosum→D49.6
corpus striatum→D49.6
cortex (cerebral)→D49.6
frontal lobe→D49.6
globus pallidus→D49.6
hippocampus→D49.6
hypothalamus→D49.6
internal capsule→D49.6
medulla oblongata→D49.6
midbrain→D49.6
occipital lobe→D49.6
parietal lobe→D49.6
peduncle→D49.6
pons→D49.6
stem→D49.6
tapetum→D49.6

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 054
Nervous System Neoplasms with MCC
DRG 055
Nervous System Neoplasms without MCC

Cross Reference

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