C86.6 Primary cutaneous CD30-positive T-cell proliferations

The ICD-10-CM code for Primary cutaneous CD30-positive T-cell proliferations is C86.6 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

C81-C96: Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Category C86

22 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to C86.6:

• Proliferation (s) › primary cutaneous CD30-positive large T-cell
• Papulosis › lymphomatoid
• Lymphoma (of) (malignant) › primary cutaneous › CD30-positive large T-cell
• Lymphoma (of) (malignant) › primary cutaneous › anaplastic large cell
• Lymphoma (of) (malignant) › anaplastic large cell › primary cutaneous

Inclusion Terms

• Lymphomatoid papulosis
• Primary cutaneous anaplastic large cell lymphoma
• Primary cutaneous CD30-positive large T-cell lymphoma

U.S. Hospital Utilization

• An estimated 220 U.S. inpatient stays in 2023 included C86.6 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)