ICD-10-CM 2027
ICD-10 code for carcinoid tumor
From the official ICD-10-CM alphabetic index entry “Tumor › carcinoid”. Page updated September 29, 2026.
About coding carcinoid tumor
The ICD-10-CM code for carcinoid tumor is D3A.00 (Benign carcinoid tumor of unspecified site). The official index lists 53 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on D3A.00.
Within D3A.0, choose D3A.00 (tumor of unspecified site) only when documentation doesn't support a more specific option: of the small intestine (D3A.01), of the appendix, large intestine, and rectum (D3A.02) and of other sites (D3A.09).
Use an additional code to identify any associated endocrine syndrome, such as: carcinoid syndrome (E34.00).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific carcinoid tumor codes (official index)
- benign D3A.00 — Benign carcinoid tumor of unspecified site
- appendix D3A.020 — Benign carcinoid tumor of the appendix
- ascending colon D3A.022 — Benign carcinoid tumor of the ascending colon
- bronchus (lung) D3A.090 — Benign carcinoid tumor of the bronchus and lung
- cecum D3A.021 — Benign carcinoid tumor of the cecum
- colon D3A.029 — Benign carcinoid tumor of the large intestine, unspecified portion
- descending colon D3A.024 — Benign carcinoid tumor of the descending colon
- duodenum D3A.010 — Benign carcinoid tumor of the duodenum
- foregut NOS D3A.094 — Benign carcinoid tumor of the foregut, unspecified
- hindgut NOS D3A.096 — Benign carcinoid tumor of the hindgut, unspecified
- ileum D3A.012 — Benign carcinoid tumor of the ileum
- jejunum D3A.011 — Benign carcinoid tumor of the jejunum
- kidney D3A.093 — Benign carcinoid tumor of the kidney
- large intestine D3A.029 — Benign carcinoid tumor of the large intestine, unspecified portion
- lung (bronchus) D3A.090 — Benign carcinoid tumor of the bronchus and lung
- midgut NOS D3A.095 — Benign carcinoid tumor of the midgut, unspecified
- rectum D3A.026 — Benign carcinoid tumor of the rectum
- sigmoid colon D3A.025 — Benign carcinoid tumor of the sigmoid colon
- small intestine D3A.019 — Benign carcinoid tumor of the small intestine, unspecified portion
- specified NEC D3A.098 — Benign carcinoid tumors of other sites
- stomach D3A.092 — Benign carcinoid tumor of the stomach
- thymus D3A.091 — Benign carcinoid tumor of the thymus
- transverse colon D3A.023 — Benign carcinoid tumor of the transverse colon
- malignant C7A.00 — Malignant carcinoid tumor of unspecified site
- appendix C7A.020 — Malignant carcinoid tumor of the appendix
- ascending colon C7A.022 — Malignant carcinoid tumor of the ascending colon
- bronchus (lung) C7A.090 — Malignant carcinoid tumor of the bronchus and lung
- cecum C7A.021 — Malignant carcinoid tumor of the cecum
- colon C7A.029 — Malignant carcinoid tumor of the large intestine, unspecified portion
- descending colon C7A.024 — Malignant carcinoid tumor of the descending colon
- duodenum C7A.010 — Malignant carcinoid tumor of the duodenum
- foregut NOS C7A.094 — Malignant carcinoid tumor of the foregut, unspecified
- hindgut NOS C7A.096 — Malignant carcinoid tumor of the hindgut, unspecified
- ileum C7A.012 — Malignant carcinoid tumor of the ileum
- jejunum C7A.011 — Malignant carcinoid tumor of the jejunum
- kidney C7A.093 — Malignant carcinoid tumor of the kidney
- large intestine C7A.029 — Malignant carcinoid tumor of the large intestine, unspecified portion
- lung (bronchus) C7A.090 — Malignant carcinoid tumor of the bronchus and lung
- midgut NOS C7A.095 — Malignant carcinoid tumor of the midgut, unspecified
- rectum C7A.026 — Malignant carcinoid tumor of the rectum
- sigmoid colon C7A.025 — Malignant carcinoid tumor of the sigmoid colon
- small intestine C7A.019 — Malignant carcinoid tumor of the small intestine, unspecified portion
- specified NEC C7A.098 — Malignant carcinoid tumors of other sites
- stomach C7A.092 — Malignant carcinoid tumor of the stomach
- thymus C7A.091 — Malignant carcinoid tumor of the thymus
- transverse colon C7A.023 — Malignant carcinoid tumor of the transverse colon
- mesentery metastasis C7B.04 — Secondary carcinoid tumors of peritoneum
- secondary C7B.00 — Secondary carcinoid tumors, unspecified site
- bone C7B.03 — Secondary carcinoid tumors of bone
- distant lymph nodes C7B.01 — Secondary carcinoid tumors of distant lymph nodes
- liver C7B.02 — Secondary carcinoid tumors of liver
- peritoneum C7B.04 — Secondary carcinoid tumors of peritoneum
- specified NEC C7B.09 — Secondary carcinoid tumors of other sites
Common questions about carcinoid tumor ICD-10 codes
What is the ICD-10 code for carcinoid tumor?
- D3A.00 — Benign carcinoid tumor of unspecified site. More specific codes apply when the documentation supports them: D3A.00, D3A.020, D3A.022, D3A.090 and others below.
What is the ICD-10 code for benign carcinoid tumor?
- D3A.00 — Benign carcinoid tumor of unspecified site.
What is the ICD-10 code for malignant carcinoid tumor?
- C7A.00 — Malignant carcinoid tumor of unspecified site.
What is the ICD-10 code for mesentery metastasis carcinoid tumor?
- C7B.04 — Secondary carcinoid tumors of peritoneum.
What is the ICD-10 code for secondary carcinoid tumor?
- C7B.00 — Secondary carcinoid tumors, unspecified site.
Is D3A.00 billable?
- Yes. D3A.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D3A.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D3A.00 as a principal diagnosis.
Is D3A.00 a CC or MCC?
- No. D3A.00 is neither a CC nor an MCC under MS-DRG v44.0.