Add documentation for Community Nurse Visits by Facility query

Care/Operations/community_nurse_visits_by_facility_kc.md

@@ -0,0 +1,87 @@
+
+# Community Nurse Visits by Facility
+
+> Count of community nurse visits grouped by facility for patients belonging to a given organization
+
+## Purpose
+
+Counts the number of completed community-nurse visits per facility, scoped to living patients within a specified organization.
+
+## Parameters
+
+| Parameter | Type | Description | Example |
+|-----------|------|-------------|---------|
+| `organization_id` | TEXT | Organization external ID to scope patients (matched against `emr_organization.external_id`) | `'org-uuid-1234'` |
+| `date` | DATE / range | Metabase date filter (typically bound to `emr_questionnaireresponse.created_date`) | `'2026-07-01'` |
+
+---
+
+## Query
+
+```sql
+WITH org_id AS (
+    SELECT emr_organization.id
+    FROM emr_organization
+    WHERE emr_organization.deleted = FALSE
+     -- AND emr_organization.external_id::text = {{organization_id}}
+),
+filtered_patients AS (
+    SELECT emr_patient.id
+    FROM emr_patient
+    INNER JOIN org_id ON TRUE
+    WHERE emr_patient.deceased_datetime IS NULL
+      AND emr_patient.organization_cache && ARRAY[org_id.id]::integer[]
+),
+community_nurse_visits AS (
+    SELECT DISTINCT
+        emr_questionnaireresponse.id AS questionnaireresponse_id,
+        emr_questionnaireresponse.encounter_id,
+        DATE(emr_questionnaireresponse.created_date) AS visit_date
+    FROM emr_questionnaireresponse
+    INNER JOIN filtered_patients
+        ON filtered_patients.id = emr_questionnaireresponse.patient_id
+    CROSS JOIN LATERAL jsonb_array_elements(emr_questionnaireresponse.responses) AS response_element
+    CROSS JOIN LATERAL jsonb_array_elements(response_element -> 'values') AS answer_element
+    WHERE emr_questionnaireresponse.questionnaire_id IN (3, 67)
+      AND emr_questionnaireresponse.status = 'completed'
+      AND emr_questionnaireresponse.encounter_id IS NOT NULL
+      AND response_element ->> 'question_id' IN (
+            'd602b9b2-d4cd-43d7-99d3-3d0169095eba',
+            'edf6799d-88c4-4f9d-8ced-552dde6ad6af'
+      )
+      AND answer_element ->> 'value' = 'Community Nurse'
+      --[[AND {{date}}]]
+),
+visit_with_facility AS (
+    SELECT
+        community_nurse_visits.visit_date,
+        facility_facility.id AS facility_id,
+        facility_facility.name AS facility_name
+    FROM community_nurse_visits
+    INNER JOIN emr_encounter
+        ON emr_encounter.id = community_nurse_visits.encounter_id
+    INNER JOIN facility_facility
+        ON facility_facility.id = emr_encounter.facility_id
+       AND facility_facility.deleted = FALSE
+)
+SELECT
+    visit_with_facility.facility_name,
+    COUNT(*) AS community_nurse_visit_count
+FROM visit_with_facility
+GROUP BY
+    visit_with_facility.facility_id,
+    visit_with_facility.facility_name
+ORDER BY
+    community_nurse_visit_count DESC,
+    visit_with_facility.facility_name;
+```
+
+## Notes
+
+- **Hardcoded IDs:**
+  - `questionnaire_id IN (3, 67)` — community nurse questionnaires
+  Update if questionnaires or questions change.
+- **`organization_id` is required** (no `[[...]]` wrapper) — the query will not run without a value.
+- Results are ordered by visit count descending, then alphabetically by facility name for ties.
+
+*Last updated: 2026-07-15*