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ICD-10 Code D01.4: Carcinoma in situ of other and unspecified parts of intestine

D01.4 is an ICD-10 diagnosis entry used to group records related to Carcinoma in situ of other and unspecified parts of intestine. 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).

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 carcinoma in situ of other and unspecified parts of intestine 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
D00-D09In situ neoplasms
category
D01Carcinoma in situ of other and unspecified digestive organs
currentD01

Official coding notes

Excludes1 (do not code together)
  • carcinoma in situ of ampulla of Vater (D01.5)

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

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
D01.4
Replacement codes
D01.40 — Carcinoma in situ of unspecified part of intestineD01.49 — Carcinoma in situ of other parts of intestine

Common synonyms

Carcinoma in situ of other and unspecified parts of intestineCarcinoma in situ of other and parts of intestine

Frequently asked questions

Code details

CodeD01.4
SystemICD10
Display nameCarcinoma in situ of other and unspecified parts of intestine
ChapterNeoplasms (C00-D49)
BlockIn situ neoplasms

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

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.