Health billing: CCAM codes and Social Security reimbursement

Introduction

Health billing constitutes a major issue for all players in the French healthcare system. Between the Common Classification of Medical Acts (CCAM), the agreements with Compulsory Health Insurance (AMO) and Supplementary Health Insurance (AMC), and the multiple regulatory constraints, mastery of pricing processes has become essential. Incorrect invoicing can lead to reimbursement rejections, significant financial losses, or even administrative sanctions from the CPAM. This comprehensive guide is aimed at public establishments, private clinics and self-employed professionals wishing to optimize their financial management while respecting the legal framework defined by the Public Health Code.

Understanding the CCAM nomenclature

The CCAM, which came into force in 2005, replaces the old General Nomenclature of Professional Acts (NGAP) for technical medical acts. It lists more than 7,600 codes organized according to a 7-character alphanumeric structure. Each code precisely identifies a medical procedure, its anatomical location, and its methods of carrying out.

CCAM pricing is based on several components: the base rate, modifiers (emergency, night, Sunday), and possible supplements. For example, the code HBFA005 corresponds to the avulsion of a permanent tooth, priced at €33.44 in sector 1. Practitioners must ensure the exact quotation to avoid any unfairness, because the CPAM has the power of retrospective control over 3 years, in accordance with article L.133-4 of the Social Security Code.

The regular updating of the CCAM, under the aegis of the High Authority of Health (HAS) and the UNCAM, requires constant monitoring. Price changes are published in the Official Journal and integrated into approved invoicing software.

The AMO-AMC system and conventions

Reimbursement of care in France is based on a dual mechanism. Compulsory Health Insurance (AMO) covers part of the costs according to the conventional rate (70% for a general consultation, 60-100% for technical procedures depending on their nature). Supplementary Health Insurance (AMC) intervenes in addition, via mutual societies and health insurance.

The national conventions signed between UNCAM and the professional unions define the enforceable prices. Doctors are divided into sector 1 (agreed fees), sector 2 (free fees with excesses) or non-agreed. Since 2017, OPTAM (Controlled Pricing Practice Option) has regulated fee overruns in exchange for social benefits.

Remote transmission via the SESAM-Vitale standard is mandatory to benefit from dematerialized flows. Generalized third-party payment, provided for by the 2016 health system modernization law, applies to ALD, maternity, CMU-C and AME.

Optimization of the billing chain

Effective billing requires the integration of several tools: HDS approved medical software (Health Data Host), Vitale card reader, connection to the ADRi teleservice for real-time verification of rights. Hospital establishments use T2A (Activity Pricing) with GHS (Homogeneous Stay Groups), while liberal establishments mainly rely on CCAM and NGAP.

The management of rejections constitutes a critical position: a rejection rate greater than 3% generally signals structural dysfunctions. Analysis of the reasons (R, LR error codes) makes it possible to identify areas for improvement: rights not up to date, obsolete codes, rating inconsistencies.