O09.619 Supervision of young primigravida, unspecified trimester

ICD-10-CM O09.619: Supervision of young primigravida, unspecified trimester

ICD-10-CM code O09.619 represents the supervision of a young primigravida when the trimester is unspecified. The available public sources identify this code and its official label, and place it alongside related supervision codes for young multigravida. CMS billing articles mention supervision of young primigravida and elderly primigravida in operational contexts, but the excerpts do not define primigravida or detail documentation requirements. 1 2 3

Plain-language overview

ICD-10-CM code O09.619 carries the official label "Supervision of young primigravida, unspecified trimester" and is listed among codes for supervision of young multigravida. The supplied sources do not define the term primigravida or specify the clinical criteria for this supervision. 3

What this code represents

Code O09.619 is identified in the source data as "Supervision of young primigravida, unspecified trimester," and the same source lists related codes such as O09.621 for supervision of young multigravida, first trimester. The excerpts do not describe the exact clinical distinction between these codes. 3

Coding details

The source listing places O09.619 adjacent to O09.621 and O09.622, which are supervision codes for young multigravida in specified trimesters. The provided excerpts do not state whether O09.619 is a billable code or explain its full category hierarchy. 3

Documentation considerations

The supplied public sources do not provide specific documentation elements or instructions for reporting ICD-10-CM code O09.619. The excerpts identify the code and its label but do not detail what clinical record entries are needed to support its use. 1 2 3

What the sources add

A CMS billing and coding article for serum magnesium mentions supervision of elderly primigravida, first trimester, while a separate CMS article on Zika virus testing mentions supervision of young primigravida. These sources place primigravida supervision codes within different Medicare billing and testing contexts. 1 2

The CMS Zika virus testing article states that Zika virus testing must follow FDA and CDCP guidelines and mentions supervision of young primigravida. The source does not explicitly link O09.619 to infectious disease screening or provide testing instructions for this code. 2

Coverage and utilization context

The CMS serum magnesium article and the CMS Zika virus testing article provide billing and coding guidance associated with Medicare coverage determinations. The excerpts do not state that use of O09.619 guarantees coverage or specify payer rules for this particular code. 1 2

Questions to verify

The supplied sources do not establish whether a more specific trimester code exists for young primigravida or how to determine the correct code when the trimester is known. Verifying the available code options requires consulting the full ICD-10-CM code set. 3

Sources

1. Article - Billing and Coding: Serum Magnesium (A57198) — cms.gov; accessed 2026-07-25.
2. Article - Billing and Coding: Zika Virus Testing by PCR and ELISA Methods (A55326) — cms.gov; accessed 2026-07-25.
3. MedicareDrop — medicaredrop.com; accessed 2026-07-25.