| Cover | Dec. 10, 2024 |
| Document Information Line Items | |
| Entity Registrant Name | HEALTHCARE AI ACQUISITION CORP. |
| Entity Central Index Key | 0001848861 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | true |
| Document Period End Date | Dec. 10, 2024 |
| Entity Ex Transition Period | false |
| Entity File Number | 001-41145 |
| Entity Incorporation State Country Code | E9 |
| Entity Tax Identification Number | 98-1585450 |
| Entity Address Address Line 1 | 418 Broadway |
| Entity Address Address Line 2 | #6434 |
| Entity Address City Or Town | Albany |
| Entity Address State Or Province | NY |
| Entity Address Postal Zip Code | 12207 |
| City Area Code | 917 |
| Local Phone Number | 446-0469 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Class A Ordinary Share Units Member | |
| Document Information Line Items | |
| Security 12b Title | Units, each consisting of one Class A Ordinary Share and one-half of one Redeemable Warrant |
| Trading Symbol | HAIAU |
| Security Exchange Name | NASDAQ |
| Class A Ordinary Share Member | |
| Document Information Line Items | |
| Security 12b Title | Class A Ordinary Share, par value $0.0001 per share |
| Trading Symbol | HAIA |
| Security Exchange Name | NASDAQ |
| Class A Ordinary Shares Warrants Member | |
| Document Information Line Items | |
| Security 12b Title | Warrant, each whole warrant exercisable for one Class A Ordinary Share for $11.50 per share |
| Trading Symbol | HAIAW |
| Security Exchange Name | NASDAQ |
