The Hartford at a glance
| Legal name | The Hartford Financial Services Group, Inc. |
|---|---|
| Also known as | Hartford Workers Comp, HIG |
| Category | Workers' compensation |
| Parent organization | The Hartford Financial Services Group (NYSE: HIG) |
| Claims payer ID | 37478 — registry reference; verify the member product, transaction and clearinghouse |
| Eligibility (270/271) payer ID | 37478 — registry reference; verify the member product, transaction and clearinghouse |
| ERA (835) payer ID | 37478 — registry reference; verify the member product, transaction and clearinghouse |
| NAIC company code | 19879 |
| States covered | Nationwide (50 states) |
| Provider resource entry point | https://medicalpro.thehartford.com/ |
| Provider phone | 1-800-327-36361-800-327-3636 is The Hartford’s workers-compensation claims-help contact. Medical-bill submission and reimbursement instructions depend on the benefit state and claim; this is not certification of every provider-billing function. |
Always verify claims-routing details against the member ID card and the payer's current EDI companion guide before submission.
Timely filing & appeals for The Hartford
Confirm jurisdiction, claim handler and provider agreement. The national claims-help page does not establish a universal medical-bill filing period.
| Submission type | Window |
|---|---|
| Initial claim reference | State and claim specific |
| Out-of-network initial claim | Verify the member's plan and applicable out-of-network rules |
| Secondary / coordination of benefits | Verify the allowed window and start event; a primary EOB does not automatically restart filing |
| Corrected claim | Verify correction instructions; do not substitute an appeal deadline |
| Reconsideration / appeal | Use the applicable denial or decision notice and the process below |
This registry has not established a payer-specific appeal ladder for The Hartford. Use the denial notice, plan document, provider agreement, or jurisdictional rule to assign the correct route and deadline. Missing registry evidence does not mean appeal rights are unavailable.
Source: The Hartford provider policy. Always confirm before disputing a TFL denial — payer policies are versioned and product-specific.
Prior authorization with The Hartford
Decision deadlines depend on the product, service and urgency. CMS-0057-F generally starts its decision-timeframe requirements in 2026 for Medicare Advantage, Medicaid and CHIP payers subject to the rule: seven calendar days for standard requests and 72 hours for expedited requests. Those requirements exclude drug authorizations and QHP issuers on the federally facilitated exchanges. Other plans, state rules and permitted extensions can differ. Check the applicable policy; a decision deadline is not a guarantee of approval.
CMS-0057-F decision-timeframe requirements and exclusions
Verify The Hartford electronic claims (837), eligibility (270/271), remittance (835) and authorization (278) separately for the member product and clearinghouse. Registry flags and routing references are not current transaction-complete approval. Confirm the companion guide, enrollment and applicable source findings below. A blank or unverified field does not establish that the transaction is unavailable. Authorization requirements and submission channels depend on the product, service and delegated reviewer. Verify the applicable policy before scheduling; a portal listing is not proof of X12 278 connectivity.
This registry does not provide a current prior-authorization code list for The Hartford. Start with the provider resources or the policy documents below, then confirm the applicable product, service and effective date. A resource link does not establish that a live code-lookup tool is available.
Top denial reasons for The Hartford
Per-payer denial benchmarks publish here once the QuickIntell anonymized ETL pipeline ingests sufficient The Hartford volume. Until then, see the broader CARC reference for industry-wide remediation guides.
Electronic claims, eligibility & ERA
| Transaction | Registry indication — not verification | Routing reference |
|---|---|---|
| 837P / 837I claims | Listed in registry; verify current scope | 37478 — registry reference; verify the member product, transaction and clearinghouse |
| 270 / 271 eligibility | Not established; verify separately | 37478 — registry reference; verify the member product, transaction and clearinghouse |
| 278 prior authorization | Not established; verify separately | Verify X12 278 routing separately |
| 835 ERA | Verify support and enrollment separately | 37478 — registry reference; verify the member product, transaction and clearinghouse |
Payer IDs vary by clearinghouse — confirm against your clearinghouse payer list (Availity, Change Healthcare/Optum, Waystar) before configuring submitter routing.
What revenue cycle teams should verify before submitting claims
- The Hartford’s Medical Pro Direct is a medical-bill status and explanation-of-reimbursement portal. Account registration and access are separate from submitting an initial bill.
- The public workers’ compensation claims page distinguishes medical bill mailing destinations by claim state. Confirm the claim number, jurisdiction, bill route, and applicable dispute process for the specific case.
Source checks and remaining limits
The latest partial comparison is dated . Retained earlier findings keep their original dates below. This is a partial source check, not a whole-page, clinical or legal review. It does not refresh the legacy review date above.
provider_phone, portal_url, timely_filing_days, payer_ids.claims
Source comparison: 2026-09-18
800-327-3636 is workers-comp claims help; bill instructions vary by state. No national 180-day provider medical-bill deadline or transaction IDs established. Source locator: Not Here to Start a Claim; I Need to Submit a Medical Bill.
Primary source for provider_phone, portal_url, timely_filing_days, payer_ids.claims
Not checked in this pass: All fields outside these bounded findings, including exact legal entity/NAIC, current enrollment and geography; Product-complete initial, corrected, secondary and appeal rules, agreements, exceptions and effective dates; Every claims, eligibility, ERA and authorization transaction identifier; portal access is not capability certification; Current clinical criteria and prior-authorization code samples; QuickIntell integrations/outcomes and historical DataForSEO demand; Accountable whole-record editorial approval; no last_reviewed date was advanced.
Sources used for this guide
Evaluate QuickIntell workflow fit for The Hartford
These module references are evaluation starting points, not evidence of a validated connection, supported transaction or customer deployment. Confirm the actual member plan, data access and product scope first.
- QuickRCM
Evaluate claim preparation, follow-up and denial worklists for The Hartford; verify the actual plan rules and available connections before implementation.
Frequently asked questions about The Hartford
Where is the The Hartford provider portal?
Use https://medicalpro.thehartford.com/ as a starting point for The Hartford provider resources. This link may open a directory or contact page rather than a transaction portal. Select the applicable product and administrator, then verify the available functions, enrollment and access requirements. QuickIntell is not the official payer portal.
What is the timely filing limit for The Hartford?
Confirm jurisdiction, claim handler and provider agreement. The national claims-help page does not establish a universal medical-bill filing period.
What is the The Hartford payer ID?
Claims: 37478 — registry reference; verify the member product, transaction and clearinghouse. Eligibility (270/271): 37478 — registry reference; verify the member product, transaction and clearinghouse. ERA (835): 37478 — registry reference; verify the member product, transaction and clearinghouse. Do not substitute a claims ID for an unverified transaction ID. Check current source findings and the member ID card before submitting.
Does The Hartford accept electronic claims?
Verify The Hartford electronic claims (837), eligibility (270/271), remittance (835) and authorization (278) separately for the member product and clearinghouse. Registry flags and routing references are not current transaction-complete approval. Confirm the companion guide, enrollment and applicable source findings below. A blank or unverified field does not establish that the transaction is unavailable.
How do I appeal a The Hartford denial?
This registry has not established a payer-specific appeal ladder for The Hartford. Use the denial notice, plan document, provider agreement, or jurisdictional rule to assign the correct route and deadline. Missing registry evidence does not mean appeal rights are unavailable.
How long do The Hartford prior authorization approvals take?
Decision deadlines depend on the product, service and urgency. CMS-0057-F generally starts its decision-timeframe requirements in 2026 for Medicare Advantage, Medicaid and CHIP payers subject to the rule: seven calendar days for standard requests and 72 hours for expedited requests. Those requirements exclude drug authorizations and QHP issuers on the federally facilitated exchanges. Other plans, state rules and permitted extensions can differ. Check the applicable policy; a decision deadline is not a guarantee of approval.
What is the The Hartford provider phone number?
This registry lists 1-800-327-3636 as a contact reference for The Hartford. 1-800-327-3636 is The Hartford’s workers-compensation claims-help contact. Medical-bill submission and reimbursement instructions depend on the benefit state and claim; this is not certification of every provider-billing function.
Automate workflows around The Hartford requirements
Connect eligibility, prior authorization, pre-submission claim checks, and remittance routing in one governed workflow. Payer and plan configuration is confirmed during implementation.
Disclaimer
This page is operational reference for medical-billing professionals. It is not legal, clinical, or contractual advice. Payer policies change without notice — always verify against The Hartford's current published documents before submission. CPT® is a registered trademark of the American Medical Association.