ICD-10-CM 2027
ICD-10 code for incomplete spontaneous abortion
Incomplete spontaneous abortion without complication
From the official ICD-10-CM alphabetic index entry “Abortion (complete) (spontaneous) › incomplete (spontaneous)”. Page updated September 29, 2026.
About coding incomplete spontaneous abortion
The ICD-10-CM code for incomplete spontaneous abortion is O03.4 (Incomplete spontaneous abortion without complication). The official index lists 33 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on O03.4.
Within O03, choose O03.4 (Incomplete spontaneous abortion without complication) only when documentation doesn't support a more specific option: genital tract and pelvic infection following incomplete spontaneous abortion (O03.0), delayed or excessive hemorrhage following incomplete spontaneous abortion (O03.1), embolism following incomplete spontaneous abortion (O03.2), other and unspecified complications following incomplete spontaneous abortion (O03.3), genital tract and pelvic infection following complete or unspecified spontaneous abortion (O03.5), delayed or excessive hemorrhage following complete or unspecified spontaneous abortion (O03.6), embolism following complete or unspecified spontaneous abortion (O03.7), other and unspecified complications following complete or unspecified spontaneous abortion (O03.8) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 770 (Abortion with D&C, Aspiration Curettage or Hysterotomy, relative weight 1.0992) and DRG 779 (Abortion without D&C, relative weight 1.0203), in MDC 14 (Pregnancy, Childbirth and the Puerperium), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific incomplete spontaneous abortion codes (official index)
- complicated (by) (following) O03.30 — Unspecified complication following incomplete spontaneous abortion
- afibrinogenemia O03.1 — Delayed or excessive hemorrhage following incomplete spontaneous abortion
- cardiac arrest O03.36 — Cardiac arrest following incomplete spontaneous abortion
- chemical damage of pelvic organ (s) O03.34 — Damage to pelvic organs following incomplete spontaneous abortion
- circulatory collapse O03.31 — Shock following incomplete spontaneous abortion
- cystitis O03.38 — Urinary tract infection following incomplete spontaneous abortion
- defibrination syndrome O03.1 — Delayed or excessive hemorrhage following incomplete spontaneous abortion
- electrolyte imbalance O03.33 — Metabolic disorder following incomplete spontaneous abortion
- embolism (air) (amniotic fluid) (blood clot) (fat) (pulmonary) (septic) (soap) O03.2 — Embolism following incomplete spontaneous abortion
- endometritis O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- genital tract and pelvic infection O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- hemolysis O03.1 — Delayed or excessive hemorrhage following incomplete spontaneous abortion
- hemorrhage (delayed) (excessive) O03.1 — Delayed or excessive hemorrhage following incomplete spontaneous abortion
- infection
- genital tract or pelvic O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- urinary tract O03.38 — Urinary tract infection following incomplete spontaneous abortion
- intravascular coagulation O03.1 — Delayed or excessive hemorrhage following incomplete spontaneous abortion
- laceration of pelvic organ (s) O03.34 — Damage to pelvic organs following incomplete spontaneous abortion
- metabolic disorder O03.33 — Metabolic disorder following incomplete spontaneous abortion
- oliguria O03.32 — Renal failure following incomplete spontaneous abortion
- oophoritis O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- parametritis O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- pelvic peritonitis O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- perforation of pelvic organ (s) O03.34 — Damage to pelvic organs following incomplete spontaneous abortion
- renal failure or shutdown O03.32 — Renal failure following incomplete spontaneous abortion
- salpingitis or salpingo-oophoritis O03.0 — Genital tract and pelvic infection following incomplete spontaneous abortion
- sepsis O03.37 — Sepsis following incomplete spontaneous abortion
- shock O03.31 — Shock following incomplete spontaneous abortion
- specified condition NEC O03.39 — Incomplete spontaneous abortion with other complications
- tubular necrosis (renal) O03.32 — Renal failure following incomplete spontaneous abortion
- uremia O03.32 — Renal failure following incomplete spontaneous abortion
- urinary infection O03.38 — Urinary tract infection following incomplete spontaneous abortion
- venous complication NEC O03.35 — Other venous complications following incomplete spontaneous abortion
- embolism (air) (amniotic fluid) (blood clot) (fat) (pulmonary) (septic) (soap) O03.2 — Embolism following incomplete spontaneous abortion
Common questions about incomplete spontaneous abortion ICD-10 codes
What is the ICD-10 code for incomplete spontaneous abortion?
- O03.4 — Incomplete spontaneous abortion without complication. More specific codes apply when the documentation supports them: O03.30, O03.1, O03.36, O03.34 and others below.
What is the ICD-10 code for complicated incomplete spontaneous abortion?
- O03.30 — Unspecified complication following incomplete spontaneous abortion.
Is O03.4 billable?
- Yes. O03.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O03.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O03.4 as a principal diagnosis.
Is O03.4 a CC or MCC?
- No. O03.4 is neither a CC nor an MCC under MS-DRG v44.0.