C90.00 Multiple myeloma not having achieved remission

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Multiple myeloma with failed remission
• Multiple myeloma NOS

Applies from C90 Multiple myeloma and malignant plasma cell neoplasms

Excludes1 (never code together)

• personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)

Applies from C90.0 Multiple myeloma

Applicable to

• Kahler's disease
• Medullary plasmacytoma
• Myelomatosis
• Plasma cell myeloma

Excludes1 (never code together)

• solitary myeloma (C90.3-)
• solitary plasmactyoma (C90.3-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 19 — Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers
• CMS-HCC V22: HCC 9 — Lung and Other Severe Cancers
• RxHCC V08: HCC 16 — Multiple Myeloma and Other Hematologic Cancers
• ESRD V24: HCC 9

MS-DRG index

Defines the logic of DRG(s) 820-822 in MDC 17.

Approximate ICD-9-CM (GEMs)

• 203.00 Multiple myeloma, without mention of having achieved remission

Code annotations containing back-references to C90.00

Back-references to C90.0

• Code Also: D47.02 Systemic mastocytosis ("plasma cell myeloma (C90.0-)")
• Code First: M36.1 Arthropathy in neoplastic disease ("multiple myeloma (C90.0)")
• Code First: N08 Glomerular disorders in diseases classified elsewhere ("multiple myeloma (C90.0-)")
• Code First: N16 Renal tubulo-interstitial disorders in diseases classified elsewhere ("multiple myeloma (C90.0-)")

Back-references to C90

• Type 1 Excludes: C76 Malignant neoplasm of other and ill-defined sites ("malignant neoplasm of lymphoid, hematopoietic and related tissue (C81-C96)")
• Code First: Z15.0 Genetic susceptibility to malignant neoplasm (", if applicable, any current malignant neoplasm (C00-C75, C81-C96)")

Nearby codes

• C90 Multiple myeloma and malignant plasma cell neoplasms
• C90.0 Multiple myeloma
• C90.00 Multiple myeloma not having achieved remission (this code)
• C90.01 Multiple myeloma in remission
• C90.02 Multiple myeloma in relapse
• C90.1 Plasma cell leukemia
• C90.10 Plasma cell leukemia not having achieved remission
• C90.11 Plasma cell leukemia in remission