This is an ICD-9/10 code based phenotype. It is used to determine if cases had a pulmonary complication ICD 9/10 code documented from day of surgery through 90 days after surgery. Both Professional fee and Hospital discharge diagnosis codes are considered. 

IMPORTANT: The pulmonary complication identified by this phenotype may have been present preoperatively and continued postoperatively. The pulmonary complication phenotype does not necessarily indicate a postoperative complication was identified. The complication may or may not be related to the procedure performed. Reasons why include: 1) ICD 9/10 'present on admission' documentation is not consistent across MPOG sites and therefore is not considered by this phenotype. 2) ICD-9/10 codes from professional fee and hospital/facility billing diagnoses data are considered. 3) The patient may have had more than one procedure during the 90 day timeframe for this phenotype. The complication code will trigger for both procedures if the start date for the ICD-9/10 code falls within the 90-day window for both cases. 4) The crosswalk between ICD-9 and ICD-10 codes was done manually using https://www.icd10data.com/

Data quality is limited to individual site documentation accuracy, completeness, and variable mapping, which is performed by each site, independently. MPOG, as the coordinating center, reviews data quality at each data upload and monthly via Data Diagnostics and Case Validation tools. This review, while thorough, may not contain all data elements relevant to this phenotype and thus should be carefully reviewed by the user.