Counties owe Kenya Medical Supplies Authority a total of Sh6 billion.
Speaking in Nairobi on Wednesday, Kemsa chairperson Irungu Nyakera said even though counties have been making efforts to clear their pending bills, four counties account for Sh464 million of the total debt owed.
According to data by Kemsa, Nairobi owes the largest amount with the current debt standing at Sh235 million.
The other counties are Homa Bay, Kakamega and Taita Taveta.
Homa Bay owes Sh104 million, Kakamega Sh66 million with Taita Taveta topping up the remaining balance.