(Reuters) - Ratings agency Fitch said on Monday the recent cybersecurity incident at UnitedHealth Group's ( UNH ) technology unit, Change Healthcare, could negatively affect credit profiles of smaller healthcare providers and pharmacies that use its services.

Change Healthcare was hit by a cyberattack on Feb. 21 and had a knock-on impact across the country's healthcare system that depends heavily on insurance.

Fitch said it was assessing the degree of impact on smaller pharmacies and healthcare providers' cash flows following the cyberattack.

It was also assessing the adequacy of existing sources of liquid capital available to these firms, the agency added.

(Reporting by Bhanvi Satija in Bengaluru; Editing by Shinjini Ganguli)