Thank you for your question about CMS1028/PC-07 Severe Obstetric Complications (SOCs). The measure specifications and other supporting documentation are located on the eCQI Resource Center for Inpatient eCQMs ( https://ecqi.healthit.gov/eh-cah/ecqms?globalyearfilter=2026&global_measure_group=3716 ). This measure has two observed calculation rates for each hospital. The first observed calculation includes all SOCs including the severe maternal morbidity (SMM) diagnoses listed in the measure specifications that were not present on admission for the delivery encounter, SMM procedures, and discharge dispositions of expired, minus the numerator exclusions, comprised of delivery inpatient hospitalizations with blood transfusion or hysterectomy with a diagnosis of placenta percreta or placenta increta and no additional SOCs, divided by the denominator consisting of delivery hospitalizations for patients greater than or equal to 8 years and less than 65 years, whose discharge date ended during the measurement period and who delivered stillborn or live birth with greater than or equal to 20 weeks gestation. The second observed calculation is similar to the first, except the second numerator consists of inpatient hospitalizations with SOCs excluding encounters where transfusion was the only SOC. In addition, this measure includes risk-adjusted rates following the Severe Obstetric Complications eCQM Methodology Report version 2.0 ( https://ecqi.healthit.gov/sites/default/files/SevereObstetricComplications%20eCQM_Methodology%20Report%20-%20Dec%202022.pdf ). A hospital’s Risk Standardized Obstetric Complications Rate (RSOCR) is calculated as the ratio of the number of “predicted” complications to the number of “expected” complications at a given hospital, multiplied by the national observed readmission rate. For each hospital, the numerator of the ratio is the number of delivery hospitalizations with a complication predicted based on the hospital’s performance with its observed case mix; the denominator is the number of delivery hospitalizations with a complication expected based on the nation’s performance with that hospital’s case mix. This approach is analogous to a ratio of “observed” to “expected” used in other types of statistical analyses. It conceptually allows a particular hospital’s performance, given its case mix, to be compared to an average hospital’s performance with the same case mix. Thus, a lower ratio indicates lower-than-expected complication rates or better quality, while a higher ratio indicates higher-than-expected complication rates or worse quality. The hospital’s ratio of P/E is then standardized by multiplying it by the national observed rate.​ [For follow-up questions submitted more than 30 days after the "Solution Posted On" date, please submit a new Jira ticket.]