Is D23 a billable ICD-10-CM code?

No. D23 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D23 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 D23?

D23 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

D23

D23 — Other benign neoplasms of skin

Non-billable headerICD-10-CM

D23 is a non-billable header ICD-10-CM code for other benign neoplasms of skin. 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 lipomatous neoplasms of skin (D17.0-D17.3)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

melanocytic nevi (D22.-)

Includes

Conditions this code covers.

benign neoplasm of hair follicles
benign neoplasm of sebaceous glands
benign neoplasm of sweat glands

Other codes that can never be billed with D23

These codes carry an Excludes1 note pointing at D23. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D23 alone.

D14.0Benign neoplasm of middle ear, nasal cavity and accessory sinuses
D31Benign neoplasm of eye and adnexa
D10.0Benign neoplasm of lip
D12.9Benign neoplasm of anus and anal canal

Risk adjustment

D23 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 D23

9 child codes. Green means billable.

Questions about D23

Is D23 a billable ICD-10-CM code?: No. D23 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D23 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 D23?: D23 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.