We are getting an incorrect score of 0 and an incorrect reportingRate of 0 (it should be calculated by the API as 100% in this example  = observationInstances/ denominator = 20/20 ),
 {
                    "name": "459",
                    "value": 0,
                    "detail": "Contributing 0",
                    "instrumentations": [
                      "QUALITY-010",
                      "QUALITY-122",
                      "QUALITY-062",
                      "QUALITY-056",
                      "QUALITY-057",
                      "QUALITY-133",
                      "QUALITY-093",
                      "QUALITY-111",
                      "QUALITY-113",
                      "QUALITY-117"
                    ],
                    "metadata": {
                      "performanceRate": 5,
                      "reportingRate": 0,
                      "measureClass": "Class 3",
                      "measureTitle": "Average Change in Back Pain Following Lumbar Discectomy/Laminotomy",
                      "highPriorityBonusEligible": true,
                      "endToEndBonusEligible": false,
                      "endToEndBonus": 0,
                      "outcomeOrPatientExperienceBonus": 0,
                      "highPriorityBonus": 0,
                      "highPriorityBonusIgnored": true,
                      "decileScore": 0,
                      "eligiblePopulation": 20,
                      "partialDecileScore": 0,
                      "partialPoints": 0,
                      "decile": -1,
                      "deciles": null,
                      "processingStatus": "PICKED",
                      "totalMeasurementPoints": 0,
                      "totalBonusPoints": 0,
                      "messages": {
                        "decileScore": "Applied 0 points for Class 3 measure with no reporting rate",
                        "measurementClass": "Is not a small practice and measure's eligible population is less than 20 and has a reporting rate of less than 60%. Measure has no benchmarks",
                        "e2eBonusScore": "Default E2E bonus score",
                        "highPriorityBonus": "Measure having highest decile score is not eligible for high priority bonus",
                        "measurementPicker": "Picked at 1",
                        "totalMeasurementPoints": "Measurement points for PICKED measure include decile score with all bonus points"
                      },
                      "noBenchmarks": true,
                      "benchmarkType": null,
                      "eMeasureId": null,
                      "toppedOut": null,
                      "isGhost": false,
                      "emaEligibilityScenarios": {
                        "zeroPercentReportingRateAndEligiblePopulation20OrGreater": true
                      },
                      "submissionMethod": "registry",
                      "performanceStart": "2019-01-01",
                      "performanceEnd": "2019-12-31",
                      "unroundedScoreValue": 0
                    }