Citius

What Citius does

Citius is a US-based, privately held software company that operates a consumer-facing web platform for auditing hospital bills and insurance denial letters. Founded in 2025 with a team of 1-10, the company targets individual patients who receive itemized hospital statements or insurer denials and lack the expertise or time to identify billing errors such as duplicate charges, upcoding, price gouging above Medicare-aligned benchmarks, and out-of-network traps. Customers upload a bill or denial letter (PDF, photo, or screenshot) and receive a line-by-line review, plain-language explanations with dollar impact, and a ready-to-send dispute or appeal letter. Distribution is entirely self-serve via usecitius.com, with access opened in email-captured cohorts to manage support capacity.

Name

Citius

Legal name

Citius

Website

https://usecitius.com

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Medical Billing Audit Software

NAICS

Agencies, Brokerages, and Other Insurance Related Activities (5242)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro industry

PRIMARYHLACAEAI

Patient Financial Engagement (Estimates, Billing Presentment, Payments)

Healthcare & Life Sciences/Digital Health & Health IT/Patient Engagement, CRM & Experience Platforms

SECONDARYHLACACAG

Patient Billing, Statements & Payment Processing

Healthcare & Life Sciences/Digital Health & Health IT/Revenue Cycle Management (RCM) & Billing Software

Keywords

• Medical bill auditing
• Hospital bill review
• Billing dispute letters
• Insurance denial analysis
• Healthcare billing errors

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Success Fee on Bill Reductions: Citius charges a performance-based fee only when they successfully help reduce what the customer owes. The fee is 10% of verified savings, capped at $200 per bill. No upfront costs or subscription fees. This aligns incentives between the company and customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Citius operates an AI-powered web platform that analyzes uploaded hospital bills and insurance denial letters, identifying billing errors such as duplicate charges, upcoding, and overcharges by parsing CPT/HCPCS codes and comparing them against Medicare-aligned benchmarks and patterns. The platform generates plain-language explanations of each flagged error with dollar impact per line item and drafts professional dispute letters that users can review and send to hospital billing departments themselves.

Product overview

Citius offers a single unified web-based product for hospital bill and insurance denial review. Users upload an itemized bill (PDF, photo, or screenshot) or denial letter, and the platform's AI analyzes each CPT/HCPCS line against benchmarks to detect duplicates, upcoding, and overcharges. The core product combines automated bill decoding with plain-language error explanations and dispute letter drafting into a single workflow: upload once, get an audit trail with a ready-to-send PDF dispute letter.

Differentiator

Problem solved

Functional benefit

Products and services

• Citius Hospital Bill & Denial Review A web-based AI platform for U.S. consumers that ingests hospital bills or insurance denial letters (PDF, photo, or screenshot), parses CPT/HCPCS codes, flags duplicate charges, price gouging, upcoding, and unfair insurance denials against benchmarks and patterns, and produces a ready-to-send dispute letter as a PDF that the user reviews and sends to billing.

Quantifiable outcome

• 80% of hospital bills in published audits contained at least one error
• +1 more outcomes

Named customers4 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature6 records

Scale indicators3 records

Recent moves5 records

Expansion highlights3 records

Direct peers

• BillFixers: BillFixers negotiates medical and dental bills on behalf of consumers for a percentage of savings, positioning it as a direct comparator to Citius's hospital-bill dispute value proposition.
• Goodbill: Goodbill is a direct-to-consumer medical bill review and negotiation service that identifies errors and negotiates reductions on hospital bills, mirroring Citius's outcome-based consumer model. Both target patients post-discharge and only charge when savings are achieved.
• Copatient: Copatient reviews medical bills for errors and negotiates reductions on consumers' behalf, using a success-fee model. It is one of the most established direct peers to Citius in patient-facing medical bill auditing.
• Resolve (formerly CoPatient Resolution): Resolve offers bill negotiation and resolution services for medical, telecom, and other consumer bills, with a success-based fee model. Its medical-bill negotiation workflow directly overlaps Citius's audit-and-dispute approach.

Broad incumbents

• Waystar: Waystar is a large healthcare revenue cycle and patient payment platform serving hospitals and health systems, representing the incumbent provider-side counterpart to Citius's consumer-side bill auditing workflow.
• Simplee (now part of Bending Spoons / Squeeze): Simplee pioneered patient financial engagement and billing presentment software for health systems, pioneering the category Citius addresses from the consumer side. It is comparable as a broader incumbent in patient billing technology.
• Cedar: Cedar is an established patient engagement and billing platform used by health systems to present bills, statements, and payment options. It competes for the patient financial engagement category but sells primarily to providers rather than directly to consumers.
• Akasa: Akasa builds AI for revenue cycle management and medical billing automation for healthcare providers. It overlaps with Citius's CPT/HCPCS decoding capability but operates as a provider-facing RCM platform rather than a consumer bill auditor.

Emerging players

• Collectly: Collectly provides AI-driven patient billing, outreach, and payment collection software to healthcare providers, addressing the same billing and patient payment journey Citius targets but from the provider side.
• Health Cost Helper: Health Cost Helper provides tools and services to help consumers understand and dispute medical bills, representing a smaller-scale, more service-oriented peer in the patient bill advocacy space.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/citius-ai

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Citius