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ICD-10-CM 2027

ICD-10 code for Extramedullary plasmacytoma

C90.2

Extramedullary plasmacytoma

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Plasmacytoma › extramedullary”. Page updated September 29, 2026.

About coding Extramedullary plasmacytoma

The ICD-10-CM code for Extramedullary plasmacytoma is C90.2 (Extramedullary plasmacytoma).

Within C90 (multiple myeloma and malignant plasma cell neoplasms), C90.2 is specifically for Extramedullary plasmacytoma. Related codes cover multiple myeloma (C90.0), plasma cell leukemia (C90.1) and Solitary plasmacytoma (C90.3).

To report this condition, pick the subcode that matches the documentation: C90.20 (not having achieved remission), C90.21 (in remission) and C90.22 (in relapse).

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

Common questions about Extramedullary plasmacytoma ICD-10 codes

What is the ICD-10 code for Extramedullary plasmacytoma?

C90.2 — Extramedullary plasmacytoma (a header code; report a more specific subcode).

Is C90.2 billable?

No. C90.2 is a header code. Report one of its more specific subcodes instead.