ICD-10 Code C90.11 – Plasma cell leukemia in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C90.11 – Plasma cell leukemia in remission
What it is
This code identifies a history of plasma cell leukemia that is currently in remission. Use it when the disease was previously active but is no longer showing active signs in the record.
Clinical signs
Clinical features vary; refer to documentation. Remission generally means the malignancy is not currently active, with no documented evidence of ongoing plasma cell leukemia at the time of coding.
When to use this code
Use C90.11 when the provider documents plasma cell leukemia in remission, including follow-up visits or surveillance care after treatment. It may also apply when the note clearly states the condition is inactive or in remission and no active disease is described.
Do not assume remission from treatment history alone; the record should explicitly support it. If the documentation is unclear, check documentation before assigning this code.
Do not use for
Do not use this code for active plasma cell leukemia, suspected disease, or a generic history of hematologic malignancy without remission status. If the provider does not state remission, choose a more specific documented diagnosis.
Coding tip
Always verify the exact status wording; “in remission” is required for C90.11.