D12.1 — Benign neoplasm of appendix

Billable

Is D12.1 billable?

Yes — D12.1 is billable for FY2027. D12.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. D12.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

D12.1 at a glance

Code	D12.1
Description	Benign neoplasm of appendix
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does D12.1 group to?

D12.1 sits in MDC 06 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

393Other Digestive System Diagnoses with MCCmedical
394Other Digestive System Diagnoses with CCmedical
395Other Digestive System Diagnoses without CC/MCCmedical

Excludes1 — never code together

The conditions below can never be reported together with D12.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

benign carcinoid tumor of the appendix (D3A.020)

Excludes2 — not included here — inherited from D12

The conditions below are not part of D12.1, but a patient may have both at the same time. When documentation supports it, D12.1 and the excluded code may both be reported.

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

How long has D12.1 existed?

D12.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.