C86.21 is the authoritative medical code for Enteropathy-type intestinal T-cell lymphoma, in remission. This classification is used in medical billing and clinical recording to specify the clinical criteria for enteropathy-type intestinal t-cell lymphoma, in remission (ICD-10-CM C86.21), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Enteropathy-type intestinal T-cell lymphoma, in remission is a billable ICD-10-CM diagnosis code C86.21. Inclusion terms: Enteropathy associated T-cell lymphoma, in remission. Excludes1 (not coded here): anaplastic large cell lymphoma, ALK negative C84.7-; anaplastic large cell lymphoma, ALK positive C84.6-; mature T/NK-cell lymphomas C84.-; other specified types of non-Hodgkin lymphoma C85.8-. Excludes2 (not included here): Kaposi's sarcoma of lymph nodes C46.3; secondary and unspecified neoplasm of lymph nodes C77.-; secondary neoplasm of bone marrow C79.52; secondary neoplasm of spleen C78.89.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C86.21 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Enteropathy associated T-cell lymphoma, in remission
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- anaplastic large cell lymphoma, ALK negative C84.7-
- anaplastic large cell lymphoma, ALK positive C84.6-
- mature T/NK-cell lymphomas C84.-
- other specified types of non-Hodgkin lymphoma C85.8-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- Kaposi's sarcoma of lymph nodes C46.3
- secondary and unspecified neoplasm of lymph nodes C77.-
- secondary neoplasm of bone marrow C79.52
- secondary neoplasm of spleen C78.89
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C86.21?
Per official ICD-10-CM Excludes1 instructions, C86.21 must not be reported together with: anaplastic large cell lymphoma, ALK negative (C84.7-); anaplastic large cell lymphoma, ALK positive (C84.6-); mature T/NK-cell lymphomas (C84.-); other specified types of non-Hodgkin lymphoma (C85.8-).
Can C86.21 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, C86.21 and the following are not considered part of each other and may both be reported when both conditions are present: Kaposi's sarcoma of lymph nodes (C46.3); secondary and unspecified neoplasm of lymph nodes (C77.-); secondary neoplasm of bone marrow (C79.52); secondary neoplasm of spleen (C78.89).
What conditions are included under C86.21?
Enteropathy-type intestinal T-cell lymphoma, in remission includes: Enteropathy associated T-cell lymphoma, in remission.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C86.21 in its code family, with their registry titles.
- C86 — Other specified types of T/NK-cell lymphoma
- C86.0 — Extranodal NK/T-cell lymphoma, nasal type
- C86.00 — Extranodal NK/T-cell lymphoma, nasal type not having achieved remission
- C86.01 — Extranodal NK/T-cell lymphoma, nasal type, in remission
- C86.1 — Hepatosplenic T-cell lymphoma
- C86.10 — Hepatosplenic T-cell lymphoma not having achieved remission
- C86.11 — Hepatosplenic T-cell lymphoma, in remission
- C86.2 — Enteropathy-type (intestinal) T-cell lymphoma
- C86.20 — Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission
- C86.3 — Subcutaneous panniculitis-like T-cell lymphoma
View all 21 codes in the C86 family