MS-DRG 819: OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITHOUT CC/MCC
MS-DRG 819 is other antepartum diagnoses with o.r. procedures without cc/mcc, in MDC 14 (a surgical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 0.7739, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 1.90 days. 1,964 ICD-10-CM principal diagnoses group into MS-DRGs 817–819 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.7739
- Geometric mean LOS
- 1.90
- Arithmetic mean LOS
- 2.30
- Post-acute transfer
- No
CMS caps year-over-year weight decreases at 10%. Before the cap this DRG weighs 0.5229; the capped weight above is the one used for payment. 41 DRGs differ this way in FY2027.
Principal diagnoses that group to MS-DRGs 817–819
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 1,964 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 817–819 the case lands in. The 24 most-searched:
- O99.891Other specified diseases and conditions complicating pregnancy
- O21.9Vomiting of pregnancy, unspecified
- O24.419Gestational diabetes mellitus in pregnancy, unspecified control
- O34.211Maternal care for low transverse scar from previous cesarean delivery
- O34.219Maternal care for unspecified type scar from previous cesarean delivery
- O48.0Post-term pregnancy
- O20.0Threatened abortion
- O20.9Hemorrhage in early pregnancy, unspecified
- O21.0Mild hyperemesis gravidarum
- O24.410Gestational diabetes mellitus in pregnancy, diet controlled
- O26.893Other specified pregnancy related conditions, third trimester
- O26.899Other specified pregnancy related conditions, unspecified trimester
- O28.3Abnormal ultrasonic finding on antenatal screening of mother
- O32.1XX0Maternal care for breech presentation, not applicable or unspecified
- O36.80X0Pregnancy with inconclusive fetal viability, not applicable or unspecified
- O13.3Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
- O13.9Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester
- O24.414Gestational diabetes mellitus in pregnancy, insulin controlled
- O26.891Other specified pregnancy related conditions, first trimester
- O26.892Other specified pregnancy related conditions, second trimester
- O28.5Abnormal chromosomal and genetic finding on antenatal screening of mother
- O36.5930Maternal care for other known or suspected poor fetal growth, third trimester, not applicable or unspecified
- O99.013Anemia complicating pregnancy, third trimester
- O00.90Unspecified ectopic pregnancy without intrauterine pregnancy
1,940 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 819.
| 817 | OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH MCC | 2.0534 | +1.2795 |
| 818 | OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITH CC | 1.2942 | +0.5203 |
| 819 | OTHER ANTEPARTUM DIAGNOSES WITH O.R. PROCEDURES WITHOUT CC/MCC | 0.7739 |
All FY2027 MS-DRGs · MDC 14