ICD-10 · PDGM grouping
O10-O16 — Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
98
No clinical group
18
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
80 of the 98 codes in O10-O16 group to MMTA - Other. A further 18 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in O10-O16
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| O10011 | Pre-existing essential htn comp pregnancy, first trimester | A | Accepted |
| O10012 | Pre-existing essential htn comp pregnancy, second trimester | A | Accepted |
| O10013 | Pre-existing essential htn comp pregnancy, third trimester | A | Accepted |
| O10019 | Pre-existing essential htn comp pregnancy, unsp trimester | None | Cannot group |
| O1002 | Pre-existing essential hypertension complicating childbirth | A | Accepted |
| O1003 | Pre-existing essential hypertension comp the puerperium | A | Accepted |
| O10111 | Pre-exist hyp heart disease comp pregnancy, first trimester | A | Accepted |
| O10112 | Pre-exist hyp heart disease comp pregnancy, second trimester | A | Accepted |
| O10113 | Pre-exist hyp heart disease comp pregnancy, third trimester | A | Accepted |
| O10119 | Pre-exist hyp heart disease comp pregnancy, unsp trimester | None | Cannot group |
| O1012 | Pre-existing hypertensive heart disease comp childbirth | A | Accepted |
| O1013 | Pre-existing hypertensive heart disease comp the puerperium | A | Accepted |
| O10211 | Pre-exist hyp chronic kidney disease comp preg, first tri | A | Accepted |
| O10212 | Pre-exist hyp chronic kidney disease comp preg, second tri | A | Accepted |
| O10213 | Pre-exist hyp chronic kidney disease comp preg, third tri | A | Accepted |
| O10219 | Pre-exist hyp chronic kidney disease comp preg, unsp tri | None | Cannot group |
| O1022 | Pre-existing hyp chronic kidney disease comp childbirth | A | Accepted |
| O1023 | Pre-existing hyp chronic kidney disease comp the puerperium | A | Accepted |
| O10311 | Pre-exist hyp heart and chr kidney dis comp preg, first tri | A | Accepted |
| O10312 | Pre-exist hyp heart and chr kidney dis comp preg, second tri | A | Accepted |
| O10313 | Pre-exist hyp heart and chr kidney dis comp preg, third tri | A | Accepted |
| O10319 | Pre-exist hyp heart and chr kidney dis comp preg, unsp tri | None | Cannot group |
| O1032 | Pre-exist hyp heart and chronic kidney disease comp chldbrth | A | Accepted |
| O1033 | Pre-exist hyp heart and chr kidney disease comp the puerp | A | Accepted |
| O10411 | Pre-existing secondary htn comp pregnancy, first trimester | A | Accepted |
| O10412 | Pre-existing secondary htn comp pregnancy, second trimester | A | Accepted |
| O10413 | Pre-existing secondary htn comp pregnancy, third trimester | A | Accepted |
| O10419 | Pre-existing secondary htn comp pregnancy, unsp trimester | None | Cannot group |
| O1042 | Pre-existing secondary hypertension complicating childbirth | A | Accepted |
| O1043 | Pre-existing secondary hypertension comp the puerperium | A | Accepted |
| O10911 | Unsp pre-existing htn comp pregnancy, first trimester | A | Accepted |
| O10912 | Unsp pre-existing htn comp pregnancy, second trimester | A | Accepted |
| O10913 | Unsp pre-existing htn comp pregnancy, third trimester | A | Accepted |
| O10919 | Unsp pre-existing htn comp pregnancy, unsp trimester | None | Cannot group |
| O1092 | Unsp pre-existing hypertension complicating childbirth | A | Accepted |
| O1093 | Unsp pre-existing hypertension complicating the puerperium | A | Accepted |
| O111 | Pre-existing hypertension w pre-eclampsia, first trimester | A | Accepted |
| O112 | Pre-existing hypertension w pre-eclampsia, second trimester | A | Accepted |
| O113 | Pre-existing hypertension w pre-eclampsia, third trimester | A | Accepted |
| O114 | Pre-existing htn with pre-eclampsia, comp childbirth | A | Accepted |
| O115 | Pre-existing htn with pre-eclampsia, comp the puerperium | A | Accepted |
| O119 | Pre-existing hypertension with pre-eclampsia, unsp trimester | None | Cannot group |
| O1200 | Gestational edema, unspecified trimester | None | Cannot group |
| O1201 | Gestational edema, first trimester | A | Accepted |
| O1202 | Gestational edema, second trimester | A | Accepted |
| O1203 | Gestational edema, third trimester | A | Accepted |
| O1204 | Gestational edema, complicating childbirth | A | Accepted |
| O1205 | Gestational edema, complicating the puerperium | A | Accepted |
| O1210 | Gestational proteinuria, unspecified trimester | None | Cannot group |
| O1211 | Gestational proteinuria, first trimester | A | Accepted |
| O1212 | Gestational proteinuria, second trimester | A | Accepted |
| O1213 | Gestational proteinuria, third trimester | A | Accepted |
| O1214 | Gestational proteinuria, complicating childbirth | A | Accepted |
| O1215 | Gestational proteinuria, complicating the puerperium | A | Accepted |
| O1220 | Gestational edema with proteinuria, unspecified trimester | None | Cannot group |
| O1221 | Gestational edema with proteinuria, first trimester | A | Accepted |
| O1222 | Gestational edema with proteinuria, second trimester | A | Accepted |
| O1223 | Gestational edema with proteinuria, third trimester | A | Accepted |
| O1224 | Gestational edema with proteinuria, complicating childbirth | A | Accepted |
| O1225 | Gestational edema with proteinuria, comp the puerperium | A | Accepted |
| O131 | Gestational htn w/o significant proteinuria, first trimester | A | Accepted |
| O132 | Gestatnl htn w/o significant proteinuria, second trimester | A | Accepted |
| O133 | Gestational htn w/o significant proteinuria, third trimester | A | Accepted |
| O134 | Gestatnl htn without significant protein, comp childbirth | A | Accepted |
| O135 | Gestatnl htn without significant protein, comp the puerp | A | Accepted |
| O139 | Gestational htn w/o significant proteinuria, unsp trimester | None | Cannot group |
| O1400 | Mild to moderate pre-eclampsia, unspecified trimester | None | Cannot group |
| O1402 | Mild to moderate pre-eclampsia, second trimester | A | Accepted |
| O1403 | Mild to moderate pre-eclampsia, third trimester | A | Accepted |
| O1404 | Mild to moderate pre-eclampsia, complicating childbirth | A | Accepted |
| O1405 | Mild to moderate pre-eclampsia, complicating the puerperium | A | Accepted |
| O1410 | Severe pre-eclampsia, unspecified trimester | None | Cannot group |
| O1412 | Severe pre-eclampsia, second trimester | A | Accepted |
| O1413 | Severe pre-eclampsia, third trimester | A | Accepted |
| O1414 | Severe pre-eclampsia complicating childbirth | A | Accepted |
| O1415 | Severe pre-eclampsia, complicating the puerperium | A | Accepted |
| O1420 | HELLP syndrome (HELLP), unspecified trimester | None | Cannot group |
| O1422 | HELLP syndrome (HELLP), second trimester | A | Accepted |
| O1423 | HELLP syndrome (HELLP), third trimester | A | Accepted |
| O1424 | HELLP syndrome, complicating childbirth | A | Accepted |
| O1425 | HELLP syndrome, complicating the puerperium | A | Accepted |
| O1490 | Unspecified pre-eclampsia, unspecified trimester | None | Cannot group |
| O1492 | Unspecified pre-eclampsia, second trimester | A | Accepted |
| O1493 | Unspecified pre-eclampsia, third trimester | A | Accepted |
| O1494 | Unspecified pre-eclampsia, complicating childbirth | A | Accepted |
| O1495 | Unspecified pre-eclampsia, complicating the puerperium | A | Accepted |
| O1500 | Eclampsia complicating pregnancy, unspecified trimester | None | Cannot group |
| O1502 | Eclampsia complicating pregnancy, second trimester | A | Accepted |
| O1503 | Eclampsia complicating pregnancy, third trimester | A | Accepted |
| O151 | Eclampsia complicating labor | A | Accepted |
| O152 | Eclampsia complicating the puerperium | A | Accepted |
| O159 | Eclampsia, unspecified as to time period | None | Cannot group |
| O161 | Unspecified maternal hypertension, first trimester | A | Accepted |
| O162 | Unspecified maternal hypertension, second trimester | A | Accepted |
| O163 | Unspecified maternal hypertension, third trimester | A | Accepted |
| O164 | Unspecified maternal hypertension, complicating childbirth | A | Accepted |
| O165 | Unspecified maternal hypertension, comp the puerperium | A | Accepted |
| O169 | Unspecified maternal hypertension, unspecified trimester | None | Cannot group |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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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