ICD-10-CM 2027 diagnosis code
C90.0Multiple myeloma
C90.0 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Looking up by condition? See ICD-10 code for Myelomatosis, ICD-10 code for Kahler's disease.
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 C90.0
C90.0 is the ICD-10-CM diagnosis code for multiple myeloma. It belongs to category C90 (multiple myeloma and malignant plasma cell neoplasms), block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) 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.
Within C90 (multiple myeloma and malignant plasma cell neoplasms), C90.0 is specifically for multiple myeloma. Related codes cover plasma cell leukemia (C90.1), Extramedullary plasmacytoma (C90.2) and Solitary plasmacytoma (C90.3).
To report this condition, pick the subcode that matches the documentation: C90.00 (not having achieved remission), C90.01 (in remission) and C90.02 (in relapse).
Don't report C90.0 together with the conditions in its Excludes1 note: solitary myeloma (C90.3-) and solitary plasmactyoma (C90.3-).
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 C90.0
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to C90.0.
› From C90 Multiple myeloma and malignant plasma cell neoplasms
- personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
Broader instructions also apply from C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue and Chapter 2: Neoplasms.
Alphabetic index entries
13 entriesTerms in the official ICD-10-CM index that lead to C90.0.
- Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › in (due to) › multiple myelomatosis
- Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › in (due to) › myelomatosis (multiple)
- Arthropathy › in (due to) › multiple myeloma
- Disorder (of) › glomerular (in) › multiple myeloma
- Disorder (of) › tubulo-interstitial (in) › multiple myeloma
- Glomerulonephritis › in (due to) › multiple myeloma
- Kahler's disease
- Myeloma (multiple)
- Myeloma (multiple) › monostotic › plasma cell
- Myeloma (multiple) › plasma cell
- Myelomatosis
- Plasmacytoma › medullary
- Pyelonephritis › in (due to) › multiple myeloma
Codes whose notes reference C90.0
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C90.0
Is C90.0 billable?
- No. C90.0 is a header code. Report one of its more specific subcodes instead.