ICD-10 · PDGM grouping
O00 Ectopic pregnancy
All 34 codes in the O00 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
34
Can lead a claim
26
Cannot lead a claim
8
What CMS assigns to O00
26 of the 34 codes group to MMTA - Other; 8 are assigned no clinical group. None of the 34 is assigned a comorbidity subgroup. 26 of the 34 can lead a claim.
Every code in O00
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| O00.0 Abdominal pregnancy | ||||
| O00.00 | Abdominal pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.01 | Abdominal pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.1 Tubal pregnancy | ||||
| O00.10 Tubal pregnancy without intrauterine pregnancy | ||||
| O00.101 | Right tubal pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.102 | Left tubal pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.109 | Unspecified tubal pregnancy without intrauterine pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.11 Tubal pregnancy with intrauterine pregnancy | ||||
| O00.111 | Right tubal pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.112 | Left tubal pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.119 | Unspecified tubal pregnancy with intrauterine pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.12 Interstitial ectopic pregnancy without intrauterine pregnancy | ||||
| O00.121 | Right interstitial ectopic pregnancy without intrauterine pregnancyCMS: Right interstit ectopic pregnancy without uterin pregnancy | Can lead a claim | A | None |
| O00.122 | Left interstitial ectopic pregnancy without intrauterine pregnancyCMS: Left interstit ectopic pregnancy without uterin pregnancy | Can lead a claim | A | None |
| O00.129 | Unspecified interstitial ectopic pregnancy without intrauterine pregnancyCMS: Unsp interstit ectopic pregnancy without uterin pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.13 Interstitial ectopic pregnancy with intrauterine pregnancy | ||||
| O00.131 | Right interstitial ectopic pregnancy with intrauterine pregnancyCMS: Right interstit ectopic pregnancy with uterin pregnancy | Can lead a claim | A | None |
| O00.132 | Left interstitial ectopic pregnancy with intrauterine pregnancyCMS: Left interstit ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.139 | Unspecified interstitial ectopic pregnancy with intrauterine pregnancyCMS: Unsp interstit ectopic pregnancy with uterin pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.2 Ovarian pregnancy | ||||
| O00.20 Ovarian pregnancy without intrauterine pregnancy | ||||
| O00.201 | Right ovarian pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.202 | Left ovarian pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.209 | Unspecified ovarian pregnancy without intrauterine pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.21 Ovarian pregnancy with intrauterine pregnancy | ||||
| O00.211 | Right ovarian pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.212 | Left ovarian pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.219 | Unspecified ovarian pregnancy with intrauterine pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.3 Cesarean scar ectopic pregnancy | ||||
| O00.31 | Cesarean scar ectopic pregnancy without intrauterine pregnancyCMS: Cesarean scar ectopic pregnancy without uterin pregnancy | Can lead a claim | A | None |
| O00.32 | Cesarean scar ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.4 Cervical ectopic pregnancy | ||||
| O00.41 | Cervical ectopic pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.42 | Cervical ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.5 Cornual ectopic pregnancy | ||||
| O00.51 Cornual ectopic pregnancy without intrauterine pregnancy | ||||
| O00.511 | Right cornual ectopic pregnancy without intrauterine pregnancyCMS: Right cornual ectopic pregnancy without uterin pregnancy | Can lead a claim | A | None |
| O00.512 | Left cornual ectopic pregnancy without intrauterine pregnancyCMS: Left cornual ectopic pregnancy without uterin pregnancy | Can lead a claim | A | None |
| O00.519 | Unspecified cornual ectopic pregnancy without intrauterine pregnancyCMS: Unsp cornual ectopic pregnancy without uterin pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.52 Cornual ectopic pregnancy with intrauterine pregnancy | ||||
| O00.521 | Right cornual ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.522 | Left cornual ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.529 | Unspecified cornual ectopic pregnancy with intrauterine pregnancyCMS: Unspecified cornual ectopic pregnancy with uterin pregnancy | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| O00.8 Other ectopic pregnancy | ||||
| O00.80 | Other ectopic pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.81 | Other ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
| O00.9 Ectopic pregnancy, unspecified | ||||
| O00.90 | Unspecified ectopic pregnancy without intrauterine pregnancy | Can lead a claim | A | None |
| O00.91 | Unspecified ectopic pregnancy with intrauterine pregnancy | Can lead a claim | A | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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