C84.1
Header — not billableSézary disease
The ICD-10 code for sézary disease is C84.1.
C84.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 11 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under C84.1
- C84.10Sézary disease, unspecified site
- C84.11Sézary disease, lymph nodes of head, face, and neck
- C84.12Sézary disease, intrathoracic lymph nodes
- C84.13Sézary disease, intra-abdominal lymph nodes
- C84.14Sézary disease, lymph nodes of axilla and upper limb
- C84.15Sézary disease, lymph nodes of inguinal region and lower limb
- C84.16Sézary disease, intrapelvic lymph nodes
- C84.17Sézary disease, spleen
- C84.18Sézary disease, lymph nodes of multiple sites
- C84.19Sézary disease, extranodal and solid organ sites
- C84.1ASézary disease, in remission
Related codes in this category
- C84.0Mycosis fungoidesnon-billable header
- C84.4Peripheral T-cell lymphoma, not elsewhere classifiednon-billable header
- C84.6Anaplastic large cell lymphoma, ALK-positivenon-billable header
- C84.7Anaplastic large cell lymphoma, ALK-negativenon-billable header
- C84.9Mature T/NK-cell lymphomas, unspecifiednon-billable header
- C84.ACutaneous T-cell lymphoma, unspecifiednon-billable header
- C84.ZOther mature T/NK-cell lymphomasnon-billable header
- C84.1Sézary diseasenon-billable header