Is N63.3 a billable ICD-10-CM code?

No. N63.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does N63.3 sit in the tabular list?

Diseases of the genitourinary system (N00-N99), in the block Disorders of breast (N60-N65).

N63.3

N63.3 — Unspecified lump in axillary tail

Non-billable headerICD-10-CM

N63.3 is a non-billable header ICD-10-CM code for unspecified lump in axillary tail. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

N63.3 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 N63.3

2 child codes. Green means billable.

N63.31Unspecified lump in axillary tail of the right breast
N63.32Unspecified lump in axillary tail of the left breast

Related codes at this level

Codes that share N63. If N63.3 is not quite right, the correct code is usually one of these.

N63.0Unspecified lump in unspecified breast
N63.1Unspecified lump in the right breast
N63.2Unspecified lump in the left breast
N63.4Unspecified lump in breast, subareolar

Questions about N63.3

Is N63.3 a billable ICD-10-CM code?: No. N63.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N63.3 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Disorders of breast (N60-N65).