What does ICD-10 code D12 mean?

ICD-10 code D12 is the standardized code used for benign neoplasm of colon, rectum, anus and anal canal in medical records and coding systems.

When is ICD-10 code D12 used?

Doctors, hospitals, and insurers may use ICD-10 code D12 when recording benign neoplasm of colon, rectum, anus and anal canal in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code D12 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code D12: Benign neoplasm of colon, rectum, anus and anal canal

Name: ICD-10 Code D12: Benign neoplasm of colon, rectum, anus and anal canal
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:03:45.971Z

D12 is an ICD-10 diagnosis entry used to group records related to Benign neoplasm of colon, rectum, anus and anal canal. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

When is it used?

May be used when a clinician documents benign neoplasm of colon, rectum, anus and anal canal in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

2Neoplasms (C00-D49)

block

D10-D36Benign neoplasms, except benign neuroendocrine tumors

currentD10-D36

Official coding notes

Excludes2 (may code together if documented)

benign carcinoid tumors of the large intestine and rectum (D3A.02-)
polyp of colon NOS (K63.5)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

OncologistGeneral Physician

Sibling codes

D10Benign neoplasm of mouth and pharynx D11Benign neoplasm of major salivary glands D13Benign neoplasm of other and ill-defined parts of digestive system D14Benign neoplasm of middle ear and respiratory system D15Benign neoplasm of other and unspecified intrathoracic organs D16Benign neoplasm of bone and articular cartilage D17Benign lipomatous neoplasm D18Hemangioma and lymphangioma, any site D19Benign neoplasm of mesothelial tissue D20Benign neoplasm of soft tissue of retroperitoneum and peritoneum D21Other benign neoplasms of connective and other soft tissue D22Melanocytic nevi D23Other benign neoplasms of skin D24Benign neoplasm of breast D25Leiomyoma of uterus D26Other benign neoplasms of uterus D27Benign neoplasm of ovary D28Benign neoplasm of other and unspecified female genital organs D29Benign neoplasm of male genital organs D30Benign neoplasm of urinary organs D31Benign neoplasm of eye and adnexa D32Benign neoplasm of meninges D33Benign neoplasm of brain and other parts of central nervous system D34Benign neoplasm of thyroid glandbillable D35Benign neoplasm of other and unspecified endocrine glands D36Benign neoplasm of other and unspecified sites

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

D12

Replacement codes

D12.0 — Benign neoplasm of cecumD12.1 — Benign neoplasm of appendixD12.2 — Benign neoplasm of ascending colonD12.3 — Benign neoplasm of transverse colonD12.4 — Benign neoplasm of descending colonD12.5 — Benign neoplasm of sigmoid colonD12.6 — Benign neoplasm of colon, unspecifiedD12.7 — Benign neoplasm of rectosigmoid junctionD12.8 — Benign neoplasm of rectumD12.9 — Benign neoplasm of anus and anal canal

Common synonyms

Benign neoplasm of colon, rectum, anus and anal canal

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.