D01.3
Billable codeCarcinoma in situ of anus and anal canal
The ICD-10 code for carcinoma in situ of anus and anal canal is D01.3.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Anal intraepithelial neoplasia III [AIN III]
- Severe dysplasia of anus
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- D01.0Carcinoma in situ of colon
- D01.1Carcinoma in situ of rectosigmoid junction
- D01.2Carcinoma in situ of rectum
- D01.4Carcinoma in situ of other and unspecified parts of intestinenon-billable header
- D01.5Carcinoma in situ of liver, gallbladder and bile ducts
- D01.7Carcinoma in situ of other specified digestive organs
- D01.9Carcinoma in situ of digestive organ, unspecified
- D01.3Carcinoma in situ of anus and anal canal
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 2305Approximate match
- 2306Approximate match
Associated MS-DRGs
D01.3 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.