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O45.9 ICD-10-CM Code: Premature separation of placenta, unspecified

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Billing Status: NO. This is a non-billable ICD-10-CM code: report a more specific billable code beneath it.

Coding at a Glance

Tabular directives
1 inclusion term

Not billable · FY2027A non-billable heading in the tabular list: report a more specific code beneath it.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

IncludesWhat this code covers
  • Abruptio placentae NOS

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Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for O45.9 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Abruptio placentae NOS

Coder workflow for O45.9

MedCoder structured workflow — derived from this code’s own official record

Before you code O45.9

  1. O45.9 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

    ReviewO45.90, O45.91, O45.92, O45.93

    See the relationships section · Guide: How to choose an ICD-10-CM code →

  2. Unspecified does not mean incorrect. When the record gives no greater specificity, O45.9 may be the appropriate code. Check the record for detail that supports a more specific sibling. An unspecified code is for records that do not provide the detail a more specific code needs; a query, not an assumption, is the route to specificity (Guidelines I.A.9.b, I.B.18).

    ReviewO45.0, O45.8

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  3. Confirm the condition is documented as complicating the pregnancy, childbirth, or the puerperium, and check the trimester where the code carries one and the fetus character where the category requires it. Chapter 15 codes belong on the maternal record only and take sequencing priority over codes from other chapters. It is the provider’s responsibility to state that a condition is not affecting the pregnancy; the trimester is assigned from the documentation (Guidelines I.C.15.a, I.C.15.a.1, I.C.15.a.3).

    Guide: How to choose an ICD-10-CM code →

Choose the right path

  1. Does the documentation support one of the more specific codes beneath O45.9?
    Yes → Select that code and continue the checks below on its own page.
    No → O45.9 cannot be reported as written; query for the specificity its subcategory needs.

    ReviewO45.90, O45.91, O45.92, O45.93

  2. Does the record document the detail a more specific sibling code needs?
    Yes → Review the specific siblings in this subcategory.
    No → Continue — O45.9 is appropriate when the documentation goes no further.

    ReviewO45.0, O45.8

Consider O45.9. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Trimester
Assigned from the documented trimester at the encounter, or the trimester in which the condition developed for inpatient stays (Guidelines I.C.15.a.3).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: The provider documents the condition in the terms of this code’s title and records no further detail.

Coding question: Is a more specific sibling code supportable?

Path: Review the specific siblings in this subcategory and what each requires the record to state.

Reason: A more specific code needs documentation of the distinguishing element; without it the unspecified code is appropriate, and a provider query is the route to specificity (Guidelines I.A.9.b, I.B.18).

ReviewO45.0, O45.8

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Premature separation of placenta, unspecified is a non-billable ICD-10-CM category code (O45.9). A more specific billable subcode must be selected for claims submission.

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Verify Before Coding

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name O45.9 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 3 Excludes1 notes: O46 — Antepartum hemorrhage, not elsewhere classified (via O45.-), O67 — Labor and delivery complicated by intrapartum hemorrhage, not elsewhere classified (via O45.-), O99.1 — Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium (via O45.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 11 Excludes2 notes: O20 — Hemorrhage in early pregnancy (via O45.-), O20-O29 — Other maternal disorders predominantly related to pregnancy (O20-O29) (via O45.-), O21 — Excessive vomiting in pregnancy (via O45.-), O22 — Venous complications and hemorrhoids in pregnancy (via O45.-), O23 — Infections of genitourinary tract in pregnancy (via O45.-), O24 — Diabetes mellitus in pregnancy, childbirth, and the puerperium (via O45.-), O25 — Malnutrition in pregnancy, childbirth and the puerperium (via O45.-), O26 — Maternal care for other conditions predominantly related to pregnancy (via O45.-), O28 — Abnormal findings on antenatal screening of mother (via O45.-), O29 — Complications of anesthesia during pregnancy (via O45.-), O43 — Placental disorders (via O45.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Related Codes

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Hemorrhage, hemorrhagic”, “Delivery”; these codes share that main term but sit in a different category of the Tabular List.

O43.22 — Placenta increta (complicated, by, placenta, placental, increta), O43.23 — Placenta percreta (complicated, by, placenta, placental, percreta), O43.89 — Other placental disorders (complicated, by, placenta, placental, disorder, specified NEC), O43.9 — Unspecified placental disorder (complicated, by, placenta, placental, disorder), O44.0 — Complete placenta previa NOS or without hemorrhage (cesarean, placenta previa), O44.1 — Complete placenta previa with hemorrhage (antepartum, due to, placenta previa), O44.2 — Partial placenta previa without hemorrhage (complicated, by, placenta, placental, previa, partial), O44.3 — Partial placenta previa with hemorrhage (complicated, by, hemorrhage, due to, placenta previa, partial), O44.4 — Low lying placenta NOS or without hemorrhage (complicated, by, placenta, placental, low), O44.5 — Low lying placenta with hemorrhage (complicated, by, hemorrhage, due to, low lying placenta), O46.00 — Antepartum hemorrhage with coagulation defect, unspecified (antepartum, with coagulation defect), O46.01 — Antepartum hemorrhage with afibrinogenemia (antepartum, with coagulation defect, afibrinogenemia), O46.02 — Antepartum hemorrhage with disseminated intravascular coagulation (antepartum, with coagulation defect, disseminated intravascular coagulation), O46.09 — Antepartum hemorrhage with other coagulation defect (antepartum, with coagulation defect, specified defect NEC), O46.90 — Antepartum hemorrhage, unspecified, unspecified trimester (antepartum), O60.10 — Preterm labor with preterm delivery, unspecified trimester (preterm), O61.0 — Failed medical induction of labor (cesarean, failed, induction of labor, medical), O61.1 — Failed instrumental induction of labor (cesarean, failed, induction of labor, surgical), O61.8 — Other failed induction of labor (cesarean, failed, induction of labor, specified NEC), O61.9 — Failed induction of labor, unspecified (cesarean, failed, induction of labor), +339 more

Contextual Map

Every relationship of O45.9 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run O45.9 with these 11 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes (11)

Nearest codes (32)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Common coding questions

MedCoder editorial

Can O45.9 be billed directly?

No. O45.9 (Premature separation of placenta, unspecified) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "O45.9 — Premature separation of placenta, unspecified." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/o45.9-premature-separation-of-placenta-unspecified

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Premature separation of placenta, unspecified

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O45.9 in its code family, with their registry titles.

View all codes in the O45 family