Z13.228 Encounter for screening for other metabolic disorders

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Z13 Encounter for screening for other diseases and disorders

Applicable to

• Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.

Excludes1 (never code together)

• encounter for diagnostic examination-code to sign or symptom

MS-DRG index

Defines the logic of DRG(s) 795 in MDC 15.

Approximate ICD-9-CM (GEMs)

• V77.3 Screening for phenylketonuria (PKU) (approximate)
• V77.4 Screening for galactosemia (approximate)
• V77.6 Screening for cystic fibrosis (approximate)
• V77.7 Screening for other inborn errors of metabolism (approximate)
• V77.99 Screening for other and unspecified endocrine, nutritional, metabolic, and immunity disorders (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z13.228

Back-references to Z13

• Type 2 Excludes: Z00 Encounter for general examination without complaint, suspected or reported diagnosis ("special screening examinations (Z11-Z13)")
• Type 2 Excludes: Z01 Encounter for other special examination without complaint, suspected or reported diagnosis ("screening examinations (Z11-Z13)")

Diagnosis Index entries for Z13.228

• Screening (for) › cystic fibrosis
• Screening (for) › disease or disorder › metabolic
• Screening (for) › disease or disorder › nutritional › metabolic
• Screening (for) › galactosemia
• Screening (for) › malnutrition › metabolic
• Screening (for) › metabolic errors, inborn
• Screening (for) › phenylketonuria

Nearby codes

• Z13.1 Encounter for screening for diabetes mellitus
• Z13.2 Encounter for screening for nutritional, metabolic and other endocrine disorders
• Z13.21 Encounter for screening for nutritional disorder
• Z13.22 Encounter for screening for metabolic disorder
• Z13.220 Encounter for screening for lipoid disorders
• Z13.228 Encounter for screening for other metabolic disorders (this code)
• Z13.29 Encounter for screening for other suspected endocrine disorder
• Z13.3 Encounter for screening examination for mental health and behavioral disorders
• Z13.30 Encounter for screening examination for mental health and behavioral disorders, unspecified
• Z13.31 Encounter for screening for depression
• Z13.32 Encounter for screening for maternal depression