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O00.51Non-billableSave New in FY2027

O00.51 - Cornual ectopic pregnancy without intrauterine pregnancy

ICD-10-CM Chapter 15: Pregnancy, childbirth and the puerperium · O00-O08 Pregnancy with abortive outcome (O00-O08) · Subcategory of O00.5 · FY2027

Coding Guidance

O00.51 is a non-billable heading. Report one of the 3 more specific codes below.

Includes, Excludes and Coding Notes

IncludesFrom O00

Conditions this code covers.

  • ruptured ectopic pregnancy
Use Additional CodeFrom O00

Add a secondary code to identify the associated condition or cause when it is documented.

  • code from category O08 to identify any associated complication
Excludes 1 — Not Coded HereFrom O00-O08 Pregnancy with abortive outcome (O00-O08)

Mutually exclusive: these conditions are never reported together with this code.

  • continuing pregnancy in multiple gestation after abortion of one fetus or more (O31.1-, O31.3-)
Excludes 1 — Not Coded HereFrom Chapter O00-O9A

Mutually exclusive: these conditions are never reported together with this code.

  • supervision of normal pregnancy (Z34.-)
Excludes 2 — Not Included HereFrom Chapter O00-O9A

Not part of this code; report both codes when the patient has both conditions.

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional CodeFrom Chapter O00-O9A

Add a secondary code to identify the associated condition or cause when it is documented.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
NotesFrom Chapter O00-O9A

Instructional notes from the ICD-10-CM tabular list.

  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery

More Specific Codes (3)

O00.511Right cornual ectopic pregnancy without intrauterine pregnancy→O00.512Left cornual ectopic pregnancy without intrauterine pregnancy→O00.519Unspecified cornual ectopic pregnancy without intrauterine pregnancy→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with O00.51.