Health Insurance Claim Denied in Turkey: Guide

Turkey operates a dual-layer health insurance system. The universal social security scheme (SGK) covers nearly all residents, while a large and growing private insurance market offers complementary coverage that fills the gaps SGK leaves. When either layer denies a claim, Turkish patients have defined appeal rights — but the path differs significantly depending on whether your denial came from SGK or a private insurer.

How Turkey's Health Insurance System Works

SGK — Sosyal Güvenlik Kurumu

The Social Security Institution (SGK) is Turkey's universal social insurance body. It covers formal employees, the self-employed, retirees, students, and most other residents through a combination of employer contributions, employee contributions, and government top-ups. SGK-covered patients access care through contracted public hospitals and clinics — and through an extensive network of private hospitals that have contracts with SGK.

SGK covers a broad range of services: inpatient care, outpatient visits, surgery, laboratory tests, imaging, and a national drug list. Patients pay small co-payments; SGK reimburses providers directly.

Tamamlayıcı Sağlık Sigortası — Complementary Health Insurance

Complementary health insurance (Tamamlayıcı Sağlık Sigortası) is the most common form of private health insurance in Turkey. It works alongside SGK — covering co-payments, upgrading hospital accommodation, providing access to senior physicians, and funding services SGK does not cover.

Major providers of complementary and full private health insurance include: Allianz Sigorta, AXA Sigorta, Anadolu Sigorta, Zurich Sigorta, Generali Sigorta, Garanti BBVA Sigorta, and Ak Sigorta.

SEDDK — The Insurance Regulator

Private insurers in Turkey are regulated by SEDDK (Sigortacılık ve Özel Emeklilik Düzenleme ve Denetleme Kurumu), the Insurance and Private Pension Regulation and Supervision Authority. SEDDK's website is seddk.gov.tr.

Why Claims Get Denied in Turkey

SGK denials:

• Treatment at a non-contracted hospital without emergency justification
• Drug not on SGK's reimbursable drug list (TUİK Listesi)
• Treatment deemed not medically necessary by SGK's review board
• Procedural errors: missing referral, incorrect hospital category accessed

Private insurance denials:

• Waiting period not elapsed (typically 3–12 months for different benefits)
• Pre-existing condition exclusion
• Treatment not covered under the policy's defined benefit schedule
• Policy sub-limit reached
• Failure to obtain pre-authorization before planned hospitalization
• Treatment received at a non-network hospital

Appealing an SGK Denial

ALO 170 — SGK's Complaint Hotline

Turkey's Social Security Institution operates ALO 170, a free telephone complaint line available to all SGK-covered individuals. This is the first point of contact for SGK disputes. Document your call reference number.

Administrative Objection (İtiraz)

For formal SGK denials, you have the right to file a written administrative objection (itiraz) with the relevant SGK provincial directorate (İl Müdürlüğü). The objection must be filed within 60 days of the denial decision. SGK is required to review and respond to the objection.

The administrative objection process is internal to SGK. If SGK upholds its denial after review, you can escalate to the next level.

Administrative Court (İdare Mahkemesi)

SGK decisions are administrative acts. If the internal objection fails, disputes proceed to the Administrative Court in your province. Administrative court proceedings can take 6–18 months but are an effective route for clear SGK coverage violations.

For complex SGK disputes — particularly around high-cost treatments, devices, or medications — consulting a social security law attorney (İş ve Sosyal Güvenlik Hukukçusu) is advisable.

Appealing a Private Insurance Denial

Internal Insurer Complaint

Every licensed private insurer in Turkey must have a formal complaints process. File a written complaint to your insurer specifying:

• Policy number and claim reference
• The exact benefit denied and the reason given
• Why you believe the denial is incorrect
• Supporting medical documentation

Turkish insurers are required to respond to complaints within a defined timeframe.

SEDDK Complaint

If the insurer's internal process fails, file a complaint with SEDDK at seddk.gov.tr. SEDDK investigates complaints against private insurers and has authority to require compliance with policy terms and insurance regulations.

Insurance Arbitration Commission (Sigorta Tahkim Komisyonu)

Turkey's Sigorta Tahkim Komisyonu (sigortatahkim.org.tr) offers free arbitration for private insurance disputes. This is often the fastest route to resolution outside of court. The commission handles disputes between policyholders and insurers, with arbitrators making binding decisions. There are amount thresholds, but most health insurance disputes fall within the commission's jurisdiction.

Key Contacts

• SGK: sgk.gov.tr | ALO 170
• SEDDK: seddk.gov.tr
• Sigorta Tahkim Komisyonu: sigortatahkim.org.tr
• SGK Provincial Office (İl Müdürlüğü): Located in each province for in-person administrative objections

Fight Back With ClaimBack

ClaimBack's free AI tool drafts a professional appeal letter in minutes, tailored to your insurer and denial reason. Don't let a denial be the final word. Fight your denial at ClaimBack →

Related Reading:

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal