Valid for Submission
C90.21 is a billable diagnosis code used to specify a medical diagnosis of extramedullary plasmacytoma in remission. The code C90.21 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|820||LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH MCC||17||5.6873|
|821||LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH CC||17||2.1551|
|822||LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITHOUT CC/MCC||17||1.2516|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert C90.21 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code C90.21 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Also called: Plasma-cell myeloma
Multiple myeloma is a cancer that begins in plasma cells, a type of white blood cell. These cells are part of your immune system, which helps protect the body from germs and other harmful substances. In time, myeloma cells collect in the bone marrow and in the solid parts of bones.
No one knows the exact causes of multiple myeloma, but it is more common in older people and African Americans. It can run in families. Common symptoms may include
- Bone pain, often in the back or ribs
- Broken bones
- Weakness or fatigue
- Weight loss
- Frequent infections and fevers
- Feeling very thirsty
- Frequent urination
Doctors diagnose multiple myeloma using lab tests, imaging tests, and a bone marrow biopsy. Your treatment depends on how advanced the disease is and whether you have symptoms. If you have no symptoms, you may not need treatment right away. If you have symptoms, you may have chemotherapy, stem cell transplantation, radiation, or targeted therapy. Targeted therapy uses substances that attack cancer cells without harming normal cells.
NIH: National Cancer Institute
- Bence-Jones protein - quantitative (Medical Encyclopedia)
- Bone marrow transplant (Medical Encyclopedia)
- Multiple myeloma (Medical Encyclopedia)
- Protein electrophoresis - serum (Medical Encyclopedia)
- Serum globulin electrophoresis (Medical Encyclopedia)
[Learn More in MedlinePlus]