# Get Single Expense Detail: GET /api/v1/eligible/{slug}

> For AI agents: this page is also Markdown at [/developers/get-eligible-expense.md](https://www.hsatrackr.com/developers/get-eligible-expense.md). Every docs page is listed in [/developers/llms.txt](https://www.hsatrackr.com/developers/llms.txt).

Retrieve detailed information about a specific HSA-eligible expense, including FAQs, related expenses, and special considerations.

```http
GET /api/v1/eligible/{slug}
```

## Parameters

| Name | In | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `slug` | path | yes |  | Expense slug identifier (e.g., 'lasik', 'chiropractor', 'covid-tests') |

## Example request

```bash
curl "https://www.hsatrackr.com/api/v1/eligible/lasik"
```

## Example response

A real response from the live handler, with each list cut to two items.

```json
{
  "data": {
    "slug": "lasik",
    "name": "LASIK Eye Surgery",
    "category": "vision",
    "eligibility": "eligible",
    "description": "LASIK and other corrective eye surgery is HSA-eligible.",
    "details": "LASIK, PRK, SMILE, and other laser vision correction surgeries are qualified medical expenses. Pre-operative consultations, the surgery itself, and post-operative care visits are all eligible. Enhancement or touch-up procedures also qualify. Medicated eye drops prescribed after surgery are a separate eligible expense.",
    "requirements": "Must be performed by a licensed ophthalmologist or eye surgeon. A pre-operative exam confirming candidacy is standard.",
    "commonCost": "$2,000–$4,000 per eye",
    "faqs": [
      {
        "question": "Is LASIK HSA-eligible?",
        "answer": "Yes. LASIK and all corrective eye surgeries are fully HSA-eligible."
      },
      {
        "question": "Is PRK HSA-eligible?",
        "answer": "Yes. PRK and other laser vision correction procedures are eligible."
      }
    ],
    "relatedSlugs": [
      "eye-exam",
      "prescription-glasses"
    ],
    "benefitCallout": {
      "taxSavingsExample": "LASIK for both eyes at $4,000-$8,000 total - HSA saves $880-$1,760 at the 22% bracket (additional savings via FICA when paid through payroll deduction)",
      "strategyTip": "LASIK is one of the best shoebox strategy expenses. Pay out of pocket and let your HSA grow tax-free for years before reimbursing."
    }
  },
  "meta": {
    "source": "https://www.hsatrackr.com/eligible/lasik",
    "citation_url": "https://www.hsatrackr.com/eligible/lasik",
    "updated": "2026-01-01",
    "disclaimer": "This information is for educational purposes only and does not constitute tax, legal, or financial advice. Consult a qualified professional for your specific situation.",
    "api_docs": "https://www.hsatrackr.com/api/v1"
  }
}
```

## Response fields

Every response is `{ data, meta }`. `meta.citation_url` is the public page to cite.

| Field | Type | Always present | Description |
| --- | --- | --- | --- |
| `slug` | string | yes |  |
| `name` | string | yes |  |
| `category` | "medical" / "dental" / "vision" / "pharmacy" / "mental-health" / "lab-tests" / "preventive-care" / "equipment-supplies" | yes |  |
| `eligibility` | "eligible" / "partially" / "ineligible" | yes | partially = eligible only with conditions (see requirements and conditionalEvidenceTypes) |
| `description` | string | yes |  |
| `details` | string | yes |  |
| `requirements` | string or null | yes | Conditions for partially eligible items, or null |
| `conditionalEvidenceTypes` | "prescription" / "letter_of_medical_necessity" / "physician_order" / "medical_necessity_statement" / "service_animal_documentation" / "care_plan" / "policy_or_coverage_document" / "treatment_and_legal_records" / "appointment_records" / "medical_cost_allocation" / "membership_agreement"[] | no | Proof to keep for partially eligible items |
| `commonCost` | string | yes |  |
| `faqs` | object[] | yes |  |
| `relatedSlugs` | string[] | yes |  |
| `seoTitle` | string | no |  |
| `seoDescription` | string | no |  |
| `sourceBasis` | SourceBasis[] | no | Primary sources behind the ruling. Missing when not yet sourced. |
| `benefitCallout` | object | no |  |

## Errors

| Status | Meaning |
| --- | --- |
| `404` | Resource not found |
| `429` | Rate limit exceeded (30 requests per minute per IP) |

Full contract: [openapi.json](https://www.hsatrackr.com/openapi.json). All endpoints: [API overview](https://www.hsatrackr.com/developers).