MCMedicalCodingSoftware
998

MS-DRG 998: PRINCIPAL DIAGNOSIS INVALID AS DISCHARGE DIAGNOSIS

DRG**

MS-DRG 998 is principal diagnosis invalid as discharge diagnosis. CMS assigns it no relative weight, so it is not paid as an ordinary inpatient case. 279 ICD-10-CM principal diagnoses group into MS-DRG 998 under the CMS definitions manual; the most-searched are listed below.

FY2027 payment factors

Relative weight
–
Geometric mean LOS
–
Arithmetic mean LOS
–
Post-acute transfer
No

Principal diagnoses that group to MS-DRG 998

From the CMS MS-DRG definitions manual’s principal-diagnosis index: 279 ICD-10-CM codes route here. The 24 most-searched:

  • O80Encounter for full-term uncomplicated delivery
  • O82Encounter for cesarean delivery without indication
  • O76Abnormality in fetal heart rate and rhythm complicating labor and delivery
  • O09.90Supervision of high risk pregnancy, unspecified, unspecified trimester
  • O09.522Supervision of elderly multigravida, second trimester
  • O09.523Supervision of elderly multigravida, third trimester
  • O09.93Supervision of high risk pregnancy, unspecified, third trimester
  • O09.513Supervision of elderly primigravida, third trimester
  • O09.521Supervision of elderly multigravida, first trimester
  • O09.529Supervision of elderly multigravida, unspecified trimester
  • O09.893Supervision of other high risk pregnancies, third trimester
  • O09.519Supervision of elderly primigravida, unspecified trimester
  • O09.91Supervision of high risk pregnancy, unspecified, first trimester
  • O09.92Supervision of high risk pregnancy, unspecified, second trimester
  • O13.4Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
  • O60.14X0Preterm labor third trimester with preterm delivery third trimester, not applicable or unspecified
  • O69.81X0Labor and delivery complicated by cord around neck, without compression, not applicable or unspecified
  • O75.82Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section
  • O75.9Complication of labor and delivery, unspecified
  • O77.0Labor and delivery complicated by meconium in amniotic fluid
  • O99.892Other specified diseases and conditions complicating childbirth
  • O09.212Supervision of pregnancy with history of pre-term labor, second trimester
  • O09.32Supervision of pregnancy with insufficient antenatal care, second trimester
  • O09.33Supervision of pregnancy with insufficient antenatal care, third trimester

255 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.

All FY2027 MS-DRGs

MS-DRG (IPPS Table 5)FY2027