> ## Documentation Index > Fetch the complete documentation index at: https://docs.sigmahmis.com/llms.txt > Use this file to discover all available pages before exploring further. # Sigma Health HMIS – Clinic Billing and Claims Docs > Explore Sigma Health HMIS documentation. Set up your clinic workspace, manage visit-linked billing, submit insurance claims, and reconcile payments. Sigma Health HMIS is a cloud-native Health Management Information System built for clinics that can't afford to lose revenue after a patient walks out the door. It connects billing, insurance claims, and payment reconciliation into one continuous trail — so every visit becomes an invoice, every invoice feeds a claim, and every payment traces back to the care that earned it. Whether you run a single-location clinic or a multi-site network, Sigma gives your billing and finance teams a single place to manage the full revenue cycle. ## Get Started Learn what Sigma does and how it helps your clinic collect every payment it has earned. Get your clinic workspace live and record your first invoice and claim in under a day. Capture charges at the point of care and generate accurate, visit-linked invoices automatically. Track every insurance claim from submission to payment — submitted, approved, rejected, or paid. ## How Sigma Works Every patient visit starts a chain of financial events. Sigma keeps that chain intact from the moment care is delivered to the moment funds land in your account. When a patient is seen, your staff records the encounter in Sigma. Charges are attached to the visit and an invoice is generated automatically — no manual data re-entry, no missed line items. From the invoice, Sigma prepares an insurance claim pre-filled with the patient's scheme details, diagnosis codes, and authorization number. Your billing team reviews and submits it directly to the insurer. When the insurer remittance arrives, Sigma matches it to the open claim. Any shortfalls, rejections, or partial payments are flagged immediately — so nothing slips through unreconciled. ## Workflows and Support Walk through the full process of billing a patient visit — from encounter to finalised invoice. Match insurer deposits and remittance advices back to open claims and close out your accounts. Find quick answers to common questions about setup, billing rules, claims, and data security. Talk to the Sigma team, get a live demo, or request guided onboarding for your clinic. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.