From 1af0c6fc8de4c29628ca45c4669b47631f7e93ac Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bartosz=20Zaczy=C5=84ski?= Date: Thu, 22 Oct 2026 14:59:35 +0000 Subject: [PATCH] Fix Medicaid payer name in LangChain RAG Cypher prompt The cypher_generation_template listed 'Medicare' as a payer, but payers.csv only contains 'Medicaid'. When the LLM used the listed name, the Cypher query matched no payer and the chain answered "I don't know the answer." Reported by a reader on the tutorial. Co-Authored-By: Claude Opus 5.5 (1M context) --- .../chatbot_api/src/chains/hospital_cypher_chain.py | 2 +- .../chatbot_api/src/chains/hospital_cypher_chain.py | 2 +- .../chatbot_api/src/chains/hospital_cypher_chain.py | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/langchain-rag-app/source_code_final/chatbot_api/src/chains/hospital_cypher_chain.py b/langchain-rag-app/source_code_final/chatbot_api/src/chains/hospital_cypher_chain.py index 198a5df311..ac9d10c758 100644 --- a/langchain-rag-app/source_code_final/chatbot_api/src/chains/hospital_cypher_chain.py +++ b/langchain-rag-app/source_code_final/chatbot_api/src/chains/hospital_cypher_chain.py @@ -80,7 +80,7 @@ Test results are one of: 'Inconclusive', 'Normal', 'Abnormal' Visit statuses are one of: 'OPEN', 'DISCHARGED' Admission Types are one of: 'Elective', 'Emergency', 'Urgent' -Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicare', +Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicaid', 'Aetna' A visit is considered open if its status is 'OPEN' and the discharge date is diff --git a/langchain-rag-app/source_code_step_4/chatbot_api/src/chains/hospital_cypher_chain.py b/langchain-rag-app/source_code_step_4/chatbot_api/src/chains/hospital_cypher_chain.py index 198a5df311..ac9d10c758 100644 --- a/langchain-rag-app/source_code_step_4/chatbot_api/src/chains/hospital_cypher_chain.py +++ b/langchain-rag-app/source_code_step_4/chatbot_api/src/chains/hospital_cypher_chain.py @@ -80,7 +80,7 @@ Test results are one of: 'Inconclusive', 'Normal', 'Abnormal' Visit statuses are one of: 'OPEN', 'DISCHARGED' Admission Types are one of: 'Elective', 'Emergency', 'Urgent' -Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicare', +Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicaid', 'Aetna' A visit is considered open if its status is 'OPEN' and the discharge date is diff --git a/langchain-rag-app/source_code_step_5/chatbot_api/src/chains/hospital_cypher_chain.py b/langchain-rag-app/source_code_step_5/chatbot_api/src/chains/hospital_cypher_chain.py index 198a5df311..ac9d10c758 100644 --- a/langchain-rag-app/source_code_step_5/chatbot_api/src/chains/hospital_cypher_chain.py +++ b/langchain-rag-app/source_code_step_5/chatbot_api/src/chains/hospital_cypher_chain.py @@ -80,7 +80,7 @@ Test results are one of: 'Inconclusive', 'Normal', 'Abnormal' Visit statuses are one of: 'OPEN', 'DISCHARGED' Admission Types are one of: 'Elective', 'Emergency', 'Urgent' -Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicare', +Payer names are one of: 'Cigna', 'Blue Cross', 'UnitedHealthcare', 'Medicaid', 'Aetna' A visit is considered open if its status is 'OPEN' and the discharge date is