D12.2 vs Z12.13

D12.2 (Benign neoplasm of ascending colon) compared with Z12.13 (Encounter for screening for malignant neoplasm of small intestine), from the official CMS tabular data. Z12.13 is the personal-history/screening code for the active disease D12.2 names. MedCoder-derived

Relationship

Review

Condition lifecycle relationship

Z12.13

Encounter for screening for malignant neoplasm of small intestine

↔

D12.2

Benign neoplasm of ascending colon

Personal-history or screening code versus the active disease.

Benign neoplasm of this site (intestine)

A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code for the same site.

Source: CMS Table of Neoplasms (site match derived from the code title)

Can these codes be reported together?

History or screening versus active disease. Z12.13 is the personal-history or screening code for the active disease D12.2 names.

Site match derived from the code’s own title against the CMS/CDC Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.

Side by side

	D12.2Benign neoplasm of ascending colon	Z12.13Encounter for screening for malignant neoplasm of small intestine
Billing status	Billable	Billable
Classification	C00-D49 — Neoplasms	Z00-Z99 — Factors influencing health status and contact with health services
Definition	Benign neoplasm of ascending colon is a billable ICD-10-CM diagnosis code (D12.2).	Encounter for screening for malignant neoplasm of small intestine is a billable ICD-10-CM diagnosis code (Z12.13).
Use additional code	—	code to identify any family history of malignant neoplasm (Z80.-)

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources