ICD-10-CM 2027 diagnosis code

C70Malignant neoplasm of meninges

Not billable — use a more specific code

C70 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C70

C70 is the ICD-10-CM diagnosis code for malignant neoplasm of meninges. It belongs to block C69-C72 (malignant neoplasms of eye, brain and other parts of central nervous system) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: C70.0 (meninges), C70.1 (meninges) and C70.9 (unspecified).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under C70

Notes that apply from higher levels

Instructions written at a parent level also apply to C70.

Broader instructions also apply from Chapter 2: Neoplasms.

Codes whose notes reference C70

C72Excludes1

Code history

2016
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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about C70

Is C70 billable?: No. C70 is a header code. Report one of its more specific subcodes instead.