O04.81 Shock following (induced) termination of pregnancy

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applicable to

• Circulatory collapse following (induced) termination of pregnancy
• Shock (postprocedural) following (induced) termination of pregnancy

Excludes1 (never code together)

• shock due to infection following (induced) termination of pregnancy (O04.87)

Applies from O04 Complications following (induced) termination of pregnancy

Includes

• complications following (induced) termination of pregnancy

Excludes2 (not included here)

• encounter for elective termination of pregnancy (Z33.2)
• failed attempted termination of pregnancy (O07.-)

MS-DRG index

Defines the logic of DRG(s) 770 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 635.52 Legally induced abortion, complicated by shock, complete (approximate)

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

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Code annotations containing back-references to O04.81

Back-references to O04

• Type 1 Excludes: D65 Disseminated intravascular coagulation [defibrination syndrome] ("abortion or ectopic or molar pregnancy (O00-O07, O08.1)")
• Type 2 Excludes: D68 Other coagulation defects ("coagulation defects complicating abortion or ectopic or molar pregnancy (O00-O07, O08.1)")
• Type 1 Excludes: G08 Intracranial and intraspinal phlebitis and thrombophlebitis ("abortion, ectopic or molar pregnancy (O00-O07, O08.7)")
• Type 2 Excludes: I26 Pulmonary embolism ("pulmonary embolism complicating abortion, ectopic or molar pregnancy (O00-O07, O08.2)")
• Code First: I47 Paroxysmal tachycardia ("abortion or ectopic or molar pregnancy (O00-O07, O08.8)")
• Code First: I49 Other cardiac arrhythmias ("abortion or ectopic or molar pregnancy (O00-O07, O08.8)")
• Code First: I50 Heart failure ("heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)")
• Code First: I74 Arterial embolism and thrombosis ("embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)")
• Code First: I80 Phlebitis and thrombophlebitis (", if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)")
• Code First: I82 Other venous embolism and thrombosis ("abortion, ectopic or molar pregnancy (O00-O07, O08.7)")
• Type 1 Excludes: K65 Peritonitis ("peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0)")
• Type 2 Excludes: K72 Hepatic failure, not elsewhere classified ("hepatic failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)")
• Type 1 Excludes: O20 Hemorrhage in early pregnancy ("pregnancy with abortive outcome (O00-O08)")
• Type 1 Excludes: R34 Anuria and oliguria ("anuria and oliguria complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)")
• Type 1 Excludes: R55 Syncope and collapse ("shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3)")
• Type 1 Excludes: R57 Shock, not elsewhere classified ("shock complicating or following ectopic or molar pregnancy (O00-O07, O08.3)")
• Type 1 Excludes: T79.0 Air embolism (traumatic) ("air embolism complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)")
• Type 1 Excludes: T79.1 Fat embolism (traumatic) ("abortion or ectopic or molar pregnancy (O00-O07, O08.2)")
• Type 1 Excludes: T79.4 Traumatic shock ("shock complicating abortion or ectopic or molar pregnancy (O00-O07, O08.3)")
• Type 1 Excludes: T81.1 Postprocedural shock ("shock following abortion or ectopic or molar pregnancy (O00-O07, O08.3)")
• Type 1 Excludes: T81.7 Vascular complications following a procedure, not elsewhere classified ("embolism complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)")

Diagnosis Index entries for O04.81

• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › circulatory collapse
• Abortion (complete) (spontaneous) › induced (encounter for) › complicated by › shock

Nearby codes

• O04.5 Genital tract and pelvic infection following (induced) termination of pregnancy
• O04.6 Delayed or excessive hemorrhage following (induced) termination of pregnancy
• O04.7 Embolism following (induced) termination of pregnancy
• O04.8 (Induced) termination of pregnancy with other and unspecified complications
• O04.80 (Induced) termination of pregnancy with unspecified complications
• O04.81 Shock following (induced) termination of pregnancy (this code)
• O04.82 Renal failure following (induced) termination of pregnancy
• O04.83 Metabolic disorder following (induced) termination of pregnancy
• O04.84 Damage to pelvic organs following (induced) termination of pregnancy
• O04.85 Other venous complications following (induced) termination of pregnancy
• O04.86 Cardiac arrest following (induced) termination of pregnancy