Is Q13 a billable ICD-10-CM code?

No. Q13 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Q13 sit in the tabular list?

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of eye, ear, face and neck (Q10-Q18).

Q13

Q13 — Congenital malformations of anterior segment of eye

Non-billable headerICD-10-CM

Q13 is a non-billable header ICD-10-CM code for congenital malformations of anterior segment of eye. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with Q13

These codes carry an Excludes1 note pointing at Q13. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q13 alone.

H18.7Other and unspecified corneal deformities
H21.4Pupillary membranes
H21.5Other and unspecified adhesions and disruptions of iris and ciliary body
H21.56Pupillary abnormalities

Risk adjustment

Q13 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 Q13

8 child codes. Green means billable.

Questions about Q13

Is Q13 a billable ICD-10-CM code?: No. Q13 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Q13 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of eye, ear, face and neck (Q10-Q18).