Is D13 a billable ICD-10-CM code?

No. D13 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D13 sit in the tabular list?

Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).

What cannot be coded together with D13?

D13 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

D13

D13 — Benign neoplasm of other and ill-defined parts of digestive system

Non-billable headerICD-10-CM

D13 is a non-billable header ICD-10-CM code for benign neoplasm of other and ill-defined parts of digestive system. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

benign stromal tumors of digestive system (D21.4)

Other codes that can never be billed with D13

These codes carry an Excludes1 note pointing at D13. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D13 alone.

D35Benign neoplasm of other and unspecified endocrine glands
D13.6Benign neoplasm of pancreas
K22.81Esophageal polyp
K22.82Esophagogastric junction polyp
K31.7Polyp of stomach and duodenum

Risk adjustment

D13 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead D13

9 child codes. Green means billable.

Questions about D13

Is D13 a billable ICD-10-CM code?: No. D13 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D13 sit in the tabular list?: Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).
What cannot be coded together with D13?: D13 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.