Is Z12.31 a billable ICD-10-CM code?

Yes. Z12.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Z12.31 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).

What cannot be coded together with Z12.31?

Z12.31 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z12.31

Z12.31 — Encounter for screening mammogram for malignant neoplasm of breast

Billable / specific codeICD-10-CMPOA exempt

Z12.31 is a billable, specific ICD-10-CM code for encounter for screening mammogram for malignant neoplasm of breast. It is valid for submission on a claim.

Excludes1 — never code together

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

inconclusive mammogram (R92.2)

Risk adjustment

Z12.31 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.

Medicare coverage

Z12.31 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography

How Z12.31 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z12.31.

Mammogram›routine
X-ray›breast(mammogram) (routine)
Screening›neoplasm›breast›routine mammogram

Related codes at this level

Codes that share Z12.3. If Z12.31 is not quite right, the correct code is usually one of these.

Z12.39Encounter for other screening for malignant neoplasm of breast

Questions about Z12.31

Is Z12.31 a billable ICD-10-CM code?: Yes. Z12.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z12.31 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).
What cannot be coded together with Z12.31?: Z12.31 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.