C71.8 is the authoritative medical code for Malignant neoplasm of overlapping sites of brain. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of overlapping sites of brain (ICD-10-CM C71.8), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Malignant neoplasm of overlapping sites of brain is a billable ICD-10-CM diagnosis code C71.8. Excludes1 (not coded here): malignant neoplasm of cranial nerves C72.2-C72.5; retrobulbar malignant neoplasm C69.6-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C71.8 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- malignant neoplasm of cranial nerves C72.2-C72.5
- retrobulbar malignant neoplasm C69.6-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C71.8?
Per Excludes1 instructions, C71.8 must not be reported with: malignant neoplasm of cranial nerves (C72.2-C72.5); retrobulbar malignant neoplasm (C69.6-).
Codes in This Family (10)
Official ICD-10-CM classifications in the same code family as C71.8, with their registry titles.
- C71 — Malignant neoplasm of brain
- C71.0 — Malignant neoplasm of cerebrum, except lobes and ventricles
- C71.1 — Malignant neoplasm of frontal lobe
- C71.2 — Malignant neoplasm of temporal lobe
- C71.3 — Malignant neoplasm of parietal lobe
- C71.4 — Malignant neoplasm of occipital lobe
- C71.5 — Malignant neoplasm of cerebral ventricle
- C71.6 — Malignant neoplasm of cerebellum
- C71.7 — Malignant neoplasm of brain stem
- C71.9 — Malignant neoplasm of brain, unspecified
Neoplasm Table Sites (4)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, brain NEC, corpus callosum — Malignant, Primary
- Neoplasm, neoplastic, brain NEC, overlapping lesion — Malignant, Primary
- Neoplasm, neoplastic, brain NEC, tapetum — Malignant, Primary
- Neoplasm, neoplastic, tapetum, brain — Malignant, Primary
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code C68.8
Malignant neoplasm of overlapping sites of urinary organs
ICD Code C69.8
Malignant neoplasm of overlapping sites of eye and adnexa
ICD Code C75.8
Malignant neoplasm with pluriglandular involvement, unspecified
ICD Code C76.8
Malignant neoplasm of other specified ill-defined sites