C81.9
⚠ Non-billable (Header)Hodgkin lymphoma, unspecified
Neoplasms (C00-D49)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • personal history of Hodgkin lymphoma (Z85.71)
Child Codes (11)
Clinical Description
ICD-10-CM code C81.9 represents hodgkin lymphoma, unspecified. This code falls under the Neoplasms (C00-D49) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 5-character code at the 4th level of specificity. There are 11 more specific child codes under C81.9. Coders should note that C81.9 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code C81.9?
ICD-10-CM code C81.9 is "Hodgkin lymphoma, unspecified". It belongs to the category: Neoplasms (C00-D49).
Is C81.9 a billable ICD-10 code?
No, C81.9 is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with C81.9?
C81.9 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in C81
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)