2026 ICD-10-CM Diagnosis Code C70.1Malignant neoplasm of spinal meninges
ICD-10-CM Codes›C00–D49›C69-C72›C70
- Billable — Valid for Submission
- Chronic Condition
C70.1 is a billable ICD-10-CM diagnosis code for malignant neoplasm of spinal meninges. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as malignant neoplasm of spinal arachnoid mater. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system cancers - brain.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Malignant neoplasm of spinal arachnoid mater
- Malignant neoplasm of spinal dura mater
- Malignant neoplasm of spinal meninges
- Malignant neoplasm of spinal pia mater
- Primary malignant neoplasm of meninges
- Primary malignant neoplasm of spinal cord
- Primary malignant neoplasm of spinal dura mater
- Primary malignant neoplasm of spinal meninges
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| arachnoid › spinal | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| dura (cranial) (mater) › spinal | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| meninges › spinal (cord) | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| pia mater › spinal | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| spine, spinal (column) › dura mater | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| spine, spinal (column) › membrane | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| spine, spinal (column) › meninges | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
| spine, spinal (column) › pia mater | C70.1 | C79.49 | – | D32.1 | D42.1 | D49.7 |
Patient EducationClinical
Cancer
Cancer is not just one disease but many diseases. Cancer begins in your cells, which are the building blocks of your body. Usually, your body forms new cells as needed, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should.
The full article covers:
- What is cancer?
- What are the types of cancer?
- How does cancer develop?
- What are the symptoms of cancer?
- How is cancer diagnosed?
- What are the treatments for cancer?
- Can cancer be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C70.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C70.1Overview
Is C70.1 (Malignant neoplasm of meninges) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report malignant neoplasm of spinal meninges on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What is the ICD-9 equivalent of C70.1?
Under the General Equivalence Mappings, malignant neoplasm of spinal meninges converts to ICD-9-CM 192.3 (mal neo spinal meninges). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
