ICD-10 · PDGM grouping
O20-O29 — Other maternal disorders predominantly related to pregnancy
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
260
No clinical group
69
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
191 of the 260 codes in O20-O29 group to MMTA - Other. A further 69 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in O20-O29
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| O200 | Threatened abortion | A | Accepted |
| O208 | Other hemorrhage in early pregnancy | A | Accepted |
| O209 | Hemorrhage in early pregnancy, unspecified | A | Accepted |
| O210 | Mild hyperemesis gravidarum | A | Accepted |
| O211 | Hyperemesis gravidarum with metabolic disturbance | A | Accepted |
| O212 | Late vomiting of pregnancy | A | Accepted |
| O218 | Other vomiting complicating pregnancy | A | Accepted |
| O219 | Vomiting of pregnancy, unspecified | A | Accepted |
| O2200 | Varicose veins of low extrm in pregnancy, unsp trimester | None | Cannot group |
| O2201 | Varicose veins of low extrm in pregnancy, first trimester | A | Accepted |
| O2202 | Varicose veins of low extrm in pregnancy, second trimester | A | Accepted |
| O2203 | Varicose veins of low extrm in pregnancy, third trimester | A | Accepted |
| O2210 | Genital varices in pregnancy, unspecified trimester | None | Cannot group |
| O2211 | Genital varices in pregnancy, first trimester | A | Accepted |
| O2212 | Genital varices in pregnancy, second trimester | A | Accepted |
| O2213 | Genital varices in pregnancy, third trimester | A | Accepted |
| O2220 | Superficial thrombophlebitis in pregnancy, unsp trimester | None | Cannot group |
| O2221 | Superficial thrombophlebitis in pregnancy, first trimester | A | Accepted |
| O2222 | Superficial thrombophlebitis in pregnancy, second trimester | A | Accepted |
| O2223 | Superficial thrombophlebitis in pregnancy, third trimester | A | Accepted |
| O2230 | Deep phlebothrombosis in pregnancy, unspecified trimester | None | Cannot group |
| O2231 | Deep phlebothrombosis in pregnancy, first trimester | A | Accepted |
| O2232 | Deep phlebothrombosis in pregnancy, second trimester | A | Accepted |
| O2233 | Deep phlebothrombosis in pregnancy, third trimester | A | Accepted |
| O2240 | Hemorrhoids in pregnancy, unspecified trimester | None | Cannot group |
| O2241 | Hemorrhoids in pregnancy, first trimester | A | Accepted |
| O2242 | Hemorrhoids in pregnancy, second trimester | A | Accepted |
| O2243 | Hemorrhoids in pregnancy, third trimester | A | Accepted |
| O2250 | Cerebral venous thrombosis in pregnancy, unsp trimester | None | Cannot group |
| O2251 | Cerebral venous thrombosis in pregnancy, first trimester | A | Accepted |
| O2252 | Cerebral venous thrombosis in pregnancy, second trimester | A | Accepted |
| O2253 | Cerebral venous thrombosis in pregnancy, third trimester | A | Accepted |
| O228X1 | Other venous complications in pregnancy, first trimester | A | Accepted |
| O228X2 | Other venous complications in pregnancy, second trimester | A | Accepted |
| O228X3 | Other venous complications in pregnancy, third trimester | A | Accepted |
| O228X9 | Other venous complications in pregnancy, unsp trimester | None | Cannot group |
| O2290 | Venous complication in pregnancy, unsp, unsp trimester | None | Cannot group |
| O2291 | Venous complication in pregnancy, unsp, first trimester | A | Accepted |
| O2292 | Venous complication in pregnancy, unsp, second trimester | A | Accepted |
| O2293 | Venous complication in pregnancy, unsp, third trimester | A | Accepted |
| O2300 | Infections of kidney in pregnancy, unspecified trimester | None | Cannot group |
| O2301 | Infections of kidney in pregnancy, first trimester | A | Accepted |
| O2302 | Infections of kidney in pregnancy, second trimester | A | Accepted |
| O2303 | Infections of kidney in pregnancy, third trimester | A | Accepted |
| O2310 | Infections of bladder in pregnancy, unspecified trimester | None | Cannot group |
| O2311 | Infections of bladder in pregnancy, first trimester | A | Accepted |
| O2312 | Infections of bladder in pregnancy, second trimester | A | Accepted |
| O2313 | Infections of bladder in pregnancy, third trimester | A | Accepted |
| O2320 | Infections of urethra in pregnancy, unspecified trimester | None | Cannot group |
| O2321 | Infections of urethra in pregnancy, first trimester | A | Accepted |
| O2322 | Infections of urethra in pregnancy, second trimester | A | Accepted |
| O2323 | Infections of urethra in pregnancy, third trimester | A | Accepted |
| O2330 | Infections of prt urinary tract in pregnancy, unsp trimester | None | Cannot group |
| O2331 | Infect of prt urinary tract in pregnancy, first trimester | A | Accepted |
| O2332 | Infect of prt urinary tract in pregnancy, second trimester | A | Accepted |
| O2333 | Infect of prt urinary tract in pregnancy, third trimester | A | Accepted |
| O2340 | Unsp infection of urinary tract in pregnancy, unsp trimester | None | Cannot group |
| O2341 | Unsp infct of urinary tract in pregnancy, first trimester | A | Accepted |
| O2342 | Unsp infct of urinary tract in pregnancy, second trimester | A | Accepted |
| O2343 | Unsp infct of urinary tract in pregnancy, third trimester | A | Accepted |
| O23511 | Infections of cervix in pregnancy, first trimester | A | Accepted |
| O23512 | Infections of cervix in pregnancy, second trimester | A | Accepted |
| O23513 | Infections of cervix in pregnancy, third trimester | A | Accepted |
| O23519 | Infections of cervix in pregnancy, unspecified trimester | None | Cannot group |
| O23521 | Salpingo-oophoritis in pregnancy, first trimester | A | Accepted |
| O23522 | Salpingo-oophoritis in pregnancy, second trimester | A | Accepted |
| O23523 | Salpingo-oophoritis in pregnancy, third trimester | A | Accepted |
| O23529 | Salpingo-oophoritis in pregnancy, unspecified trimester | None | Cannot group |
| O23591 | Infection oth prt genitl trct in pregnancy, first trimester | A | Accepted |
| O23592 | Infection oth prt genitl trct in pregnancy, second trimester | A | Accepted |
| O23593 | Infection oth prt genitl trct in pregnancy, third trimester | A | Accepted |
| O23599 | Infection oth prt genital tract in pregnancy, unsp trimester | None | Cannot group |
| O2390 | Unsp GU tract infection in pregnancy, unsp trimester | None | Cannot group |
| O2391 | Unsp GU tract infection in pregnancy, first trimester | A | Accepted |
| O2392 | Unsp GU tract infection in pregnancy, second trimester | A | Accepted |
| O2393 | Unsp GU tract infection in pregnancy, third trimester | A | Accepted |
| O24011 | Pre-existing type 1 diabetes, in pregnancy, first trimester | A | Accepted |
| O24012 | Pre-existing type 1 diabetes, in pregnancy, second trimester | A | Accepted |
| O24013 | Pre-existing type 1 diabetes, in pregnancy, third trimester | A | Accepted |
| O24019 | Pre-exist type 1 diabetes, in pregnancy, unsp trimester | None | Cannot group |
| O2402 | Pre-existing type 1 diabetes mellitus, in childbirth | A | Accepted |
| O2403 | Pre-existing type 1 diabetes mellitus, in the puerperium | A | Accepted |
| O24111 | Pre-existing type 2 diabetes, in pregnancy, first trimester | A | Accepted |
| O24112 | Pre-existing type 2 diabetes, in pregnancy, second trimester | A | Accepted |
| O24113 | Pre-existing type 2 diabetes, in pregnancy, third trimester | A | Accepted |
| O24119 | Pre-exist type 2 diabetes, in pregnancy, unsp trimester | None | Cannot group |
| O2412 | Pre-existing type 2 diabetes mellitus, in childbirth | A | Accepted |
| O2413 | Pre-existing type 2 diabetes mellitus, in the puerperium | A | Accepted |
| O24311 | Unsp pre-existing diabetes in pregnancy, first trimester | A | Accepted |
| O24312 | Unsp pre-existing diabetes in pregnancy, second trimester | A | Accepted |
| O24313 | Unsp pre-existing diabetes in pregnancy, third trimester | A | Accepted |
| O24319 | Unsp pre-existing diabetes in pregnancy, unsp trimester | None | Cannot group |
| O2432 | Unspecified pre-existing diabetes mellitus in childbirth | A | Accepted |
| O2433 | Unspecified pre-existing diabetes mellitus in the puerperium | A | Accepted |
| O24410 | Gestational diabetes mellitus in pregnancy, diet controlled | A | Accepted |
| O24414 | Gestational diabetes in pregnancy, insulin controlled | A | Accepted |
| O24415 | Gestatnl diabetes in preg, ctrl by oral hypoglycemic drugs | A | Accepted |
| O24419 | Gestational diabetes mellitus in pregnancy, unsp control | A | Accepted |
| O24420 | Gestational diabetes mellitus in childbirth, diet controlled | A | Accepted |
| O24424 | Gestational diabetes in childbirth, insulin controlled | A | Accepted |
| O24425 | Gestatnl diab in chldbrth, ctrl by oral hypoglycemic drugs | A | Accepted |
| O24429 | Gestational diabetes mellitus in childbirth, unsp control | A | Accepted |
| O24430 | Gestational diabetes in the puerperium, diet controlled | A | Accepted |
| O24434 | Gestational diabetes in the puerperium, insulin controlled | A | Accepted |
| O24435 | Gestatnl diabetes in puerp, ctrl by oral hypoglycemic drugs | A | Accepted |
| O24439 | Gestational diabetes in the puerperium, unsp control | A | Accepted |
| O24811 | Oth pre-existing diabetes in pregnancy, first trimester | A | Accepted |
| O24812 | Oth pre-existing diabetes in pregnancy, second trimester | A | Accepted |
| O24813 | Oth pre-existing diabetes in pregnancy, third trimester | A | Accepted |
| O24819 | Oth pre-existing diabetes in pregnancy, unsp trimester | None | Cannot group |
| O2482 | Other pre-existing diabetes mellitus in childbirth | A | Accepted |
| O2483 | Other pre-existing diabetes mellitus in the puerperium | A | Accepted |
| O24911 | Unspecified diabetes mellitus in pregnancy, first trimester | A | Accepted |
| O24912 | Unspecified diabetes mellitus in pregnancy, second trimester | A | Accepted |
| O24913 | Unspecified diabetes mellitus in pregnancy, third trimester | A | Accepted |
| O24919 | Unsp diabetes mellitus in pregnancy, unspecified trimester | None | Cannot group |
| O2492 | Unspecified diabetes mellitus in childbirth | A | Accepted |
| O2493 | Unspecified diabetes mellitus in the puerperium | A | Accepted |
| O2510 | Malnutrition in pregnancy, unspecified trimester | None | Cannot group |
| O2511 | Malnutrition in pregnancy, first trimester | A | Accepted |
| O2512 | Malnutrition in pregnancy, second trimester | A | Accepted |
| O2513 | Malnutrition in pregnancy, third trimester | A | Accepted |
| O252 | Malnutrition in childbirth | A | Accepted |
| O253 | Malnutrition in the puerperium | A | Accepted |
| O2600 | Excessive weight gain in pregnancy, unspecified trimester | None | Cannot group |
| O2601 | Excessive weight gain in pregnancy, first trimester | A | Accepted |
| O2602 | Excessive weight gain in pregnancy, second trimester | A | Accepted |
| O2603 | Excessive weight gain in pregnancy, third trimester | A | Accepted |
| O2610 | Low weight gain in pregnancy, unspecified trimester | None | Cannot group |
| O2611 | Low weight gain in pregnancy, first trimester | A | Accepted |
| O2612 | Low weight gain in pregnancy, second trimester | A | Accepted |
| O2613 | Low weight gain in pregnancy, third trimester | A | Accepted |
| O2620 | Preg care for patient w recurrent preg loss, unsp trimester | None | Cannot group |
| O2621 | Preg care for patient w recurrent preg loss, first trimester | A | Accepted |
| O2622 | Preg care for patient w recur preg loss, second trimester | A | Accepted |
| O2623 | Preg care for patient w recurrent preg loss, third trimester | A | Accepted |
| O2630 | Retained uterin contracep dev in pregnancy, unsp trimester | None | Cannot group |
| O2631 | Retained uterin contracep dev in pregnancy, first trimester | A | Accepted |
| O2632 | Retained uterin contracep dev in pregnancy, second trimester | A | Accepted |
| O2633 | Retained uterin contracep dev in pregnancy, third trimester | A | Accepted |
| O2640 | Herpes gestationis, unspecified trimester | None | Cannot group |
| O2641 | Herpes gestationis, first trimester | A | Accepted |
| O2642 | Herpes gestationis, second trimester | A | Accepted |
| O2643 | Herpes gestationis, third trimester | A | Accepted |
| O2650 | Maternal hypotension syndrome, unspecified trimester | None | Cannot group |
| O2651 | Maternal hypotension syndrome, first trimester | A | Accepted |
| O2652 | Maternal hypotension syndrome, second trimester | A | Accepted |
| O2653 | Maternal hypotension syndrome, third trimester | A | Accepted |
| O26611 | Liver and biliary tract disord in pregnancy, first trimester | A | Accepted |
| O26612 | Liver and biliary tract disord in preg, second trimester | None | Cannot group |
| O26613 | Liver and biliary tract disord in pregnancy, third trimester | A | Accepted |
| O26619 | Liver and biliary tract disord in pregnancy, unsp trimester | None | Cannot group |
| O2662 | Liver and biliary tract disorders in childbirth | A | Accepted |
| O2663 | Liver and biliary tract disorders in the puerperium | A | Accepted |
| O26641 | Intrahepatic cholestasis of pregnancy, first trimester | A | Accepted |
| O26642 | Intrahepatic cholestasis of pregnancy, second trimester | A | Accepted |
| O26643 | Intrahepatic cholestasis of pregnancy, third trimester | A | Accepted |
| O26649 | Intrahepatic cholestasis of pregnancy, unspecified trimester | None | Cannot group |
| O26711 | Sublux of symphysis (pubis) in pregnancy, first trimester | A | Accepted |
| O26712 | Sublux of symphysis (pubis) in pregnancy, second trimester | A | Accepted |
| O26713 | Sublux of symphysis (pubis) in pregnancy, third trimester | A | Accepted |
| O26719 | Sublux of symphysis (pubis) in pregnancy, unsp trimester | None | Cannot group |
| O2672 | Subluxation of symphysis (pubis) in childbirth | A | Accepted |
| O2673 | Subluxation of symphysis (pubis) in the puerperium | A | Accepted |
| O26811 | Pregnancy related exhaustion and fatigue, first trimester | A | Accepted |
| O26812 | Pregnancy related exhaustion and fatigue, second trimester | A | Accepted |
| O26813 | Pregnancy related exhaustion and fatigue, third trimester | A | Accepted |
| O26819 | Pregnancy related exhaustion and fatigue, unsp trimester | None | Cannot group |
| O26821 | Pregnancy related peripheral neuritis, first trimester | A | Accepted |
| O26822 | Pregnancy related peripheral neuritis, second trimester | A | Accepted |
| O26823 | Pregnancy related peripheral neuritis, third trimester | A | Accepted |
| O26829 | Pregnancy related peripheral neuritis, unspecified trimester | None | Cannot group |
| O26831 | Pregnancy related renal disease, first trimester | A | Accepted |
| O26832 | Pregnancy related renal disease, second trimester | A | Accepted |
| O26833 | Pregnancy related renal disease, third trimester | A | Accepted |
| O26839 | Pregnancy related renal disease, unspecified trimester | None | Cannot group |
| O26841 | Uterine size-date discrepancy, first trimester | A | Accepted |
| O26842 | Uterine size-date discrepancy, second trimester | A | Accepted |
| O26843 | Uterine size-date discrepancy, third trimester | A | Accepted |
| O26849 | Uterine size-date discrepancy, unspecified trimester | None | Cannot group |
| O26851 | Spotting complicating pregnancy, first trimester | A | Accepted |
| O26852 | Spotting complicating pregnancy, second trimester | A | Accepted |
| O26853 | Spotting complicating pregnancy, third trimester | A | Accepted |
| O26859 | Spotting complicating pregnancy, unspecified trimester | None | Cannot group |
| O2686 | Pruritic urticarial papules and plaques of pregnancy (PUPPP) | A | Accepted |
| O26872 | Cervical shortening, second trimester | A | Accepted |
| O26873 | Cervical shortening, third trimester | A | Accepted |
| O26879 | Cervical shortening, unspecified trimester | None | Cannot group |
| O26891 | Oth pregnancy related conditions, first trimester | A | Accepted |
| O26892 | Oth pregnancy related conditions, second trimester | A | Accepted |
| O26893 | Oth pregnancy related conditions, third trimester | A | Accepted |
| O26899 | Oth pregnancy related conditions, unspecified trimester | None | Cannot group |
| O2690 | Pregnancy related conditions, unsp, unspecified trimester | None | Cannot group |
| O2691 | Pregnancy related conditions, unspecified, first trimester | None | Cannot group |
| O2692 | Pregnancy related conditions, unspecified, second trimester | None | Cannot group |
| O2693 | Pregnancy related conditions, unspecified, third trimester | None | Cannot group |
| O280 | Abnormal hematolog finding on antenatal screening of mother | None | Cannot group |
| O281 | Abnormal biochemical finding on antenat screening of mother | None | Cannot group |
| O282 | Abnormal cytolog finding on antenatal screening of mother | None | Cannot group |
| O283 | Abnormal ultrasonic finding on antenatal screening of mother | None | Cannot group |
| O284 | Abnormal radiolog finding on antenatal screening of mother | None | Cannot group |
| O285 | Abn chromsoml and genetic find on antenat screen of mother | None | Cannot group |
| O288 | Other abnormal findings on antenatal screening of mother | None | Cannot group |
| O289 | Unsp abnormal findings on antenatal screening of mother | None | Cannot group |
| O29011 | Aspirat pneumonitis due to anesth during preg, first tri | A | Accepted |
| O29012 | Aspirat pneumonitis due to anesth during preg, second tri | A | Accepted |
| O29013 | Aspirat pneumonitis due to anesth during preg, third tri | A | Accepted |
| O29019 | Aspirat pneumonitis due to anesth during preg, unsp tri | None | Cannot group |
| O29021 | Pressr collapse of lung due to anesth during preg, first tri | A | Accepted |
| O29022 | Pressr collapse of lung d/t anesth during preg, second tri | A | Accepted |
| O29023 | Pressr collapse of lung due to anesth during preg, third tri | A | Accepted |
| O29029 | Pressr collapse of lung due to anesth during preg, unsp tri | None | Cannot group |
| O29091 | Oth pulmonary comp of anesth during preg, first trimester | A | Accepted |
| O29092 | Oth pulmonary comp of anesth during preg, second trimester | A | Accepted |
| O29093 | Oth pulmonary comp of anesth during preg, third trimester | A | Accepted |
| O29099 | Oth pulmonary comp of anesth during preg, unsp trimester | None | Cannot group |
| O29111 | Cardiac arrest due to anesth during preg, first trimester | A | Accepted |
| O29112 | Cardiac arrest due to anesth during preg, second trimester | A | Accepted |
| O29113 | Cardiac arrest due to anesth during preg, third trimester | A | Accepted |
| O29119 | Cardiac arrest due to anesth during preg, unsp trimester | None | Cannot group |
| O29121 | Cardiac failure due to anesth during preg, first trimester | A | Accepted |
| O29122 | Cardiac failure due to anesth during preg, second trimester | A | Accepted |
| O29123 | Cardiac failure due to anesth during preg, third trimester | A | Accepted |
| O29129 | Cardiac failure due to anesth during preg, unsp trimester | None | Cannot group |
| O29191 | Oth cardiac comp of anesth during pregnancy, first trimester | A | Accepted |
| O29192 | Oth cardiac comp of anesth during preg, second trimester | A | Accepted |
| O29193 | Oth cardiac comp of anesth during pregnancy, third trimester | A | Accepted |
| O29199 | Oth cardiac comp of anesth during pregnancy, unsp trimester | None | Cannot group |
| O29211 | Cerebral anoxia due to anesth during preg, first trimester | A | Accepted |
| O29212 | Cerebral anoxia due to anesth during preg, second trimester | A | Accepted |
| O29213 | Cerebral anoxia due to anesth during preg, third trimester | A | Accepted |
| O29219 | Cerebral anoxia due to anesth during preg, unsp trimester | None | Cannot group |
| O29291 | Oth cnsl comp of anesth during pregnancy, first trimester | A | Accepted |
| O29292 | Oth cnsl comp of anesth during pregnancy, second trimester | A | Accepted |
| O29293 | Oth cnsl comp of anesth during pregnancy, third trimester | A | Accepted |
| O29299 | Oth cnsl comp of anesthesia during pregnancy, unsp trimester | None | Cannot group |
| O293X1 | Toxic reaction to local anesth during preg, first trimester | A | Accepted |
| O293X2 | Toxic reaction to local anesth during preg, second trimester | A | Accepted |
| O293X3 | Toxic reaction to local anesth during preg, third trimester | A | Accepted |
| O293X9 | Toxic reaction to local anesth during preg, unsp trimester | None | Cannot group |
| O2940 | Spinal and epidur anesth induce hdache during preg, unsp tri | None | Cannot group |
| O2941 | Spinal and epidur anesth induce hdache dur preg, first tri | A | Accepted |
| O2942 | Spinal and epidur anesth induce hdache dur preg, second tri | A | Accepted |
| O2943 | Spinal and epidur anesth induce hdache dur preg, third tri | A | Accepted |
| O295X1 | Oth comp of spinal and epidur anesth during preg, first tri | A | Accepted |
| O295X2 | Oth comp of spinal and epidur anesth during preg, second tri | A | Accepted |
| O295X3 | Oth comp of spinal and epidur anesth during preg, third tri | A | Accepted |
| O295X9 | Oth comp of spinal and epidural anesth during preg, unsp tri | None | Cannot group |
| O2960 | Failed or difficult intubation for anesth dur preg, unsp tri | None | Cannot group |
| O2961 | Fail or difficult intubation for anesth dur preg, first tri | A | Accepted |
| O2962 | Fail or difficult intubation for anesth dur preg, second tri | A | Accepted |
| O2963 | Fail or difficult intubation for anesth dur preg, third tri | A | Accepted |
| O298X1 | Oth comp of anesthesia during pregnancy, first trimester | A | Accepted |
| O298X2 | Oth comp of anesthesia during pregnancy, second trimester | A | Accepted |
| O298X3 | Oth comp of anesthesia during pregnancy, third trimester | A | Accepted |
| O298X9 | Oth comp of anesthesia during pregnancy, unsp trimester | None | Cannot group |
| O2990 | Unsp comp of anesthesia during pregnancy, unsp trimester | None | Cannot group |
| O2991 | Unsp comp of anesthesia during pregnancy, first trimester | None | Cannot group |
| O2992 | Unsp comp of anesthesia during pregnancy, second trimester | None | Cannot group |
| O2993 | Unsp comp of anesthesia during pregnancy, third 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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