Question: Which HCPCS code should I report for a lactate ringer bag? Louisiana Subscriber Answer: The proper code is J7120 (Ringers lactate infusion, up to 1,000 cc). You may see it documented as lactated Ringers, lactated Ringers, or even LR or RL. The solution includes sodium chloride, sodium lactate, potassium chloride, calcium chloride, and sometimes dextrose. The doctor may use it to replace fluid or electrolytes.