Skip to content
Dx

ICD-10-CM 2027 diagnosis code

C81Hodgkin lymphoma

Not billable — use a more specific code

C81 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C81

C81 is the ICD-10-CM diagnosis code for Hodgkin lymphoma. It belongs to block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: C81.0 (lymphoma), C81.1 (lymphoma), C81.2 (lymphoma), C81.3 (lymphoma), C81.4 (lymphoma), C81.7 (lymphoma) and C81.9 (unspecified).

Don't report C81 together with the conditions in its Excludes1 note: personal history of Hodgkin lymphoma (Z85.71).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under C81

Coding notes

Excludes1Not coded here — never report together with this code
  • personal history of Hodgkin lymphoma (Z85.71)

Notes that apply from higher levels

Instructions written at a parent level also apply to C81.

Codes whose notes reference C81

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about C81

Is C81 billable?

No. C81 is a header code. Report one of its more specific subcodes instead.