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O08.3 ICD-10-CM Code: Shock following ectopic and molar pregnancy

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
2 inclusion terms · 2 Excludes1

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 769 — POSTPARTUM AND POST ABORTION DIAGNOSES WITH O.R. PROCEDURES (MDC 14)
  • MS-DRG 776 — POSTPARTUM AND POST ABORTION DIAGNOSES WITHOUT O.R. PROCEDURES (MDC 14)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for O08.3 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on O08.3 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Circulatory collapse following ectopic and molar pregnancy
  • Shock (postprocedural) following ectopic and molar pregnancy

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Coder workflow for O08.3

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

Before you code O08.3

  1. 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 →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with O08.3. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the documentation support a condition named in O08.3’s Excludes1 note?
    Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
    No → Continue.

    ReviewO08.82, O31.1, O31.3

Consider O08.3. 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).

Official instructions as workflow

  • Excludes1 — check before selecting O08.3(2 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with O08.3: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareO08.82, O31.1, O31.3

    See the official tabular notes · Guidelines I.A.12.a

Coding decision scenarios

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

Documentation: Both the condition O08.3 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewO08.82, O31.1, O31.3

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.

Code Overview

Shock following ectopic and molar pregnancy is a billable ICD-10-CM diagnosis code (O08.3).

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

Indexed Clinical Terms (14)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Chapter 15: Pregnancy, Childbirth, and the Puerperium (O00-O9A)

3) Complications leading to abortion Codes from Chapter 15 may be used as additional codes to identify any documented complications of the pregnancy in conjunction with codes in categories in O04, O07 and O08.

Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)

Codes in category Z3A, Weeks of gestation, may be assigned to provide additional information about the pregnancy. Category Z3A codes should not be assigned for pregnancies with abortive outcomes (categories O00- O08), elective termination of pregnancy (code Z33.2), nor for postpartum conditions, as category Z3A is not applicable to these conditions. The date of the admission should be used to determine weeks of gestation for inpatient admissions that encompass more than one gestational week.

Verify Before Coding

  • Age-restricted: the Medicare Code Editor lists this as a maternity (age 9-64) diagnosis; other ages are presumed incorrect.
  • MCC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

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 structured relationships — computed from published CMS and AHRQ datasets

Other codes that name O08.3 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 5 Excludes1 notes across 3 chapters: O20 — Hemorrhage in early pregnancy (via O08.-), R55 — Syncope and collapse, R57 — Shock, not elsewhere classified, T79.4 — Traumatic shock, T81.1 — Postprocedural shock.

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: MCC — Major Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 265 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 2 MS-DRGs: DRG 769 (MDC 14), DRG 776 (MDC 14).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):PRG007 — Complications following ectopic and/or molar pregnancy (default); SYM003 — Shock.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as MCC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

O08.2 — Embolism following ectopic and molar pregnancy, O08.4 — Renal failure following ectopic and molar pregnancy, O08.5 — Metabolic disorders following an ectopic and molar pregnancy, O08.6 — Damage to pelvic organs and tissues following an ectopic and molar pregnancy, O08.7 — Other venous complications following an ectopic and molar pregnancy, O08.81 — Cardiac arrest following an ectopic and molar pregnancy, O08.83 — Urinary tract infection following an ectopic and molar pregnancy, O08.89 — Other complications following an ectopic and molar pregnancy, O08.9 — Unspecified complication following an ectopic and molar pregnancy, O11.4 — Pre-existing hypertension with pre-eclampsia, complicating childbirth, O11.5 — Pre-existing hypertension with pre-eclampsia, complicating the puerperium, O12.04 — Gestational edema, complicating childbirth, O12.05 — Gestational edema, complicating the puerperium, O12.14 — Gestational proteinuria, complicating childbirth, O12.15 — Gestational proteinuria, complicating the puerperium, O12.24 — Gestational edema with proteinuria, complicating childbirth, O12.25 — Gestational edema with proteinuria, complicating the puerperium, O13.4 — Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth, O13.5 — Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium, O14.04 — Mild to moderate pre-eclampsia, complicating childbirth, +244 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Complications following ectopic and/or molar pregnancy, Shock).

O03.31 — Shock following incomplete spontaneous abortion, O03.81 — Shock following complete or unspecified spontaneous abortion, O04.81 — Shock following (induced) termination of pregnancy, O07.31 — Shock following failed attempted termination of pregnancy, O08.0 — Genital tract and pelvic infection following ectopic and molar pregnancy, O08.1 — Delayed or excessive hemorrhage following ectopic and molar pregnancy, O08.2 — Embolism following ectopic and molar pregnancy, O08.4 — Renal failure following ectopic and molar pregnancy, O08.5 — Metabolic disorders following an ectopic and molar pregnancy, O08.6 — Damage to pelvic organs and tissues following an ectopic and molar pregnancy, O08.7 — Other venous complications following an ectopic and molar pregnancy, O08.81 — Cardiac arrest following an ectopic and molar pregnancy, O08.82 — Sepsis following ectopic and molar pregnancy, O08.83 — Urinary tract infection following an ectopic and molar pregnancy, O08.89 — Other complications following an ectopic and molar pregnancy, O08.9 — Unspecified complication following an ectopic and molar pregnancy, O75.1 — Shock during or following labor and delivery, R57.0 — Cardiogenic shock, R57.1 — Hypovolemic shock, R57.8 — Other shock, +7 more

Same Index main term, other category

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

M48.53 — Collapsed vertebra, not elsewhere classified, cervicothoracic region (vertebra, cervicothoracic region), M48.54 — Collapsed vertebra, not elsewhere classified, thoracic region (vertebra, thoracic region), M48.55 — Collapsed vertebra, not elsewhere classified, thoracolumbar region (vertebra, thoracolumbar region), M48.56 — Collapsed vertebra, not elsewhere classified, lumbar region (vertebra, lumbar region), M48.57 — Collapsed vertebra, not elsewhere classified, lumbosacral region (vertebra, lumbosacral region), M48.58 — Collapsed vertebra, not elsewhere classified, sacral and sacrococcygeal region (vertebra, sacrococcygeal region), M80.88 — Other osteoporosis with current pathological fracture, vertebra(e) (vertebra, in, osteoporosis), M84.58 — Pathological fracture in neoplastic disease, other specified site (vertebra, in, neoplasm), M95.0 — Acquired deformity of nose (nose), N17.0 — Acute kidney failure with tubular necrosis (kidney), O29.02 — Pressure collapse of lung due to anesthesia during pregnancy (lung, pressure due to anesthesiaor other sedation, in pregnancy), O74.1 — Other pulmonary complications of anesthesia during labor and delivery (lung, pressure due to anesthesiaor other sedation, during labor and delivery), O75.1 — Shock during or following labor and delivery (obstetric), O89.09 — Other pulmonary complications of anesthesia during the puerperium (lung, pressure due to anesthesiaor other sedation, postpartum, puerperal), P29.89 — Other cardiovascular disorders originating in the perinatal period (vascular, newborn), Q16.5 — Congenital malformation of inner ear (labyrinth, membranous), R55 — Syncope and collapse, R57.0 — Cardiogenic shock (cardiogenic), R57.1 — Hypovolemic shock (hypovolemic), R57.8 — Other shock (hematologic), +53 more

Contextual Map

Every relationship of O08.3 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 O08.3 with these 6 related codes in Claim Check

Hierarchy

Excludes1

Referenced by Excludes1 notes

  • O20 — Hemorrhage in early pregnancy[Excludes1](via O08.-): “pregnancy with abortive outcome (O00-O08)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • R55 — Syncope and collapse[Excludes1]: “shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • R57 — Shock, not elsewhere classified[Excludes1]: “shock complicating or following ectopic or molar pregnancy (O00-O07, O08.3)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T79.4 — Traumatic shock[Excludes1]: “shock complicating abortion or ectopic or molar pregnancy (O00-O07, O08.3)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T81.1 — Postprocedural shock[Excludes1]: “shock following abortion or ectopic or molar pregnancy (O00-O07, O08.3)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 14 — Pregnancy, Childbirth and the Puerperium[MDC crossing]: “Pregnancy, Childbirth and the Puerperium — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 94 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries (14)

  • Collapse, circulatory (peripheral), following ectopic or molar pregnancy[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Collapse, vascular (peripheral), following ectopic or molar pregnancy[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Complication (s) (from) (of), ectopic pregnancy, shock[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Complication (s) (from) (of), molar pregnancy NOS, shock[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pregnancy (single) (uterine), ectopic (ruptured), complicated (by), circulatory collapse[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pregnancy (single) (uterine), molar NEC, complicated (by), circulatory collapse[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pregnancy (single) (uterine), molar NEC, complicated (by), shock[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Shock, complicating ectopic or molar pregnancy[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • and 6 more

Nearest codes (14)

Change history

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

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 FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 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 structured 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 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.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

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. "O08.3 — Shock following ectopic and molar pregnancy." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/o08.3-shock-following-ectopic-and-molar-pregnancy

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Shock following ectopic and molar pregnancy

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), 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 O08.3 in its code family, with their registry titles.

View all codes in the O08 family