ICD-10/C26.1

C26.1 ICD 2026 Code: Malignant neoplasm of spleen

C26.1 is the authoritative medical code for Malignant neoplasm of spleen. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of spleen (ICD-10-CM C26.1), 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

Malignant neoplasm of spleen is a billable ICD-10-CM diagnosis code C26.1. Excludes1 (not coded here): Hodgkin lymphoma C81.-; non-Hodgkin lymphoma C82-C85; malignant neoplasm of peritoneum and retroperitoneum C48.-; Kaposi's sarcoma of gastrointestinal sites C46.4. Excludes2 (not included here): gastrointestinal stromal tumors C49.A-.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for C26.1 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • Hodgkin lymphoma C81.-
  • non-Hodgkin lymphoma C82-C85
  • malignant neoplasm of peritoneum and retroperitoneum C48.-
  • Kaposi's sarcoma of gastrointestinal sites C46.4

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • gastrointestinal stromal tumors C49.A-

Frequently Asked Questions (FAQ) & Clinical Guidance

What can't be coded together with C26.1?

Per Excludes1 instructions, C26.1 must not be reported with: Hodgkin lymphoma (C81.-); non-Hodgkin lymphoma (C82-C85); malignant neoplasm of peritoneum and retroperitoneum (C48.-); Kaposi's sarcoma of gastrointestinal sites (C46.4).

Can C26.1 be reported alongside related conditions?

Per Excludes2 instructions, C26.1 and the following may both be reported when both are present: gastrointestinal stromal tumors (C49.A-).

Codes in This Family (3)

Official ICD-10-CM classifications in the same code family as C26.1, with their registry titles.

  • C26 — Malignant neoplasm of other and ill-defined digestive organs
  • C26.0 — Malignant neoplasm of intestinal tract, part unspecified
  • C26.9 — Malignant neoplasm of ill-defined sites within the digestive system

Neoplasm Table Sites (1)

Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.

  • Neoplasm, neoplastic, spleen, splenic NEC — Malignant, Primary

Related Codes & Numerical Sequence (Crawl Map)

Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:

ICD Code C21.1 Malignant neoplasm of anal canal
ICD Code C22.1 Intrahepatic bile duct carcinoma
ICD Code C24.1 Malignant neoplasm of ampulla of Vater
ICD Code C25.1 Malignant neoplasm of body of pancreas
ICD Code C30.1 Malignant neoplasm of middle ear
ICD Code C31.1 Malignant neoplasm of ethmoidal sinus
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