Ectopic pregnancy (O00) ICD-10-CM
The O00 code range covers ectopic pregnancy with 28 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- ruptured ectopic pregnancy
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code from category O08
Codes in the O00 Range 28 codes · 18 billable
- O00 Ectopic pregnancyNon-billable
- O00.0 Abdominal pregnancyNon-billable
- O00.00 Abdominal pregnancy without intrauterine pregnancy
- O00.01 Abdominal pregnancy with intrauterine pregnancy
- O00.1 Tubal pregnancyNon-billable
- O00.10 Tubal pregnancy without intrauterine pregnancyNon-billable
- O00.101 Right tubal pregnancy without intrauterine pregnancy
- O00.102 Left tubal pregnancy without intrauterine pregnancy
- O00.109 Unspecified tubal pregnancy without intrauterine pregnancy
- O00.11 Tubal pregnancy with intrauterine pregnancyNon-billable
- O00.111 Right tubal pregnancy with intrauterine pregnancy
- O00.112 Left tubal pregnancy with intrauterine pregnancy
- O00.119 Unspecified tubal pregnancy with intrauterine pregnancy
- O00.2 Ovarian pregnancyNon-billable
- O00.20 Ovarian pregnancy without intrauterine pregnancyNon-billable
- O00.201 Right ovarian pregnancy without intrauterine pregnancy
- O00.202 Left ovarian pregnancy without intrauterine pregnancy
- O00.209 Unspecified ovarian pregnancy without intrauterine pregnancy
- O00.21 Ovarian pregnancy with intrauterine pregnancyNon-billable
- O00.211 Right ovarian pregnancy with intrauterine pregnancy
- O00.212 Left ovarian pregnancy with intrauterine pregnancy
- O00.219 Unspecified ovarian pregnancy with intrauterine pregnancy
- O00.8 Other ectopic pregnancyNon-billable
- O00.80 Other ectopic pregnancy without intrauterine pregnancy
- O00.81 Other ectopic pregnancy with intrauterine pregnancy
- O00.9 Ectopic pregnancy, unspecifiedNon-billable
- O00.90 Unspecified ectopic pregnancy without intrauterine pregnancy
- O00.91 Unspecified ectopic pregnancy with intrauterine pregnancy
About the O00 Code Range
ICD-10 code O00 classifies various types of ectopic pregnancy, where a fertilized egg implants outside the uterus. These codes specify the exact location and whether an intrauterine pregnancy is also present, facilitating precise diagnosis and treatment documentation.
The section includes codes for abdominal (O00.0), tubal (O00.1), ovarian (O00.2), and other ectopic pregnancies (O00.8), each with subcategories indicating the presence or absence of an intrauterine pregnancy. For example, the ICD-10 code for abdominal pregnancy (O00.00) covers cases also known as intraperitoneal or mesenteric pregnancy. Tubal pregnancy codes (O00.10–O00.19) detail location distinctions such as right or left fallopian tube involvement; synonyms like “ruptured tubal pregnancy” help clarify coding choices. Other types include ovarian pregnancy (O00.20 series) and rarer forms like cervical or cornual pregnancy (O00.80). Unspecified ectopic pregnancies are coded under O00.9, aiding cases where the exact site is not documented. Utilizing these specific ICD-10 codes ensures accurate clinical reporting of ectopic pregnancy variations for improved patient care and medical records.
Questions About This Page
How many billable codes are in the O00 range?
Of the 28 codes in this range, 18 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the O00 range classify?
The range classifies ectopic pregnancy. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
