Non-Billable / Non-Specific Code
ICD-10-CM C90 is the diagnosis code for Multiple myeloma and malignant plasma cell neoplasms. This code falls under the section "Malignant neoplasms of lymphoid, hematopoietic and related tissue" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as C90. They are mutually exclusive:
Understanding where C90 sits in the ICD-10-CM classification helps ensure proper coding:
No, C90 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C90 is the ICD-10-CM diagnosis code for "Multiple myeloma and malignant plasma cell neoplasms". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C90 is located in Section C81-C96 — "Malignant neoplasms of lymphoid, hematopoietic and related tissue" within Chapter 2 of the ICD-10-CM Tabular List.
C90 has 4 sub-code(s) that provide more specific detail: C90.0, C90.1, C90.2, C90.3.
Use C90 when the patients documented diagnosis matches "Multiple myeloma and malignant plasma cell neoplasms" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Multiple myeloma and malignant plasma cell neoplasms is C90.
No, C90 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C90 is in Chapter 2 of the ICD-10-CM Tabular List.
Type 1 Excludes for C90 include: personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79).
Yes, C90 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.