ICD-10-CM > K00-K95 > K20-K31 > K31 > K31.8 > K31.84 K31.84 Gastroparesis Billable/Specific Copy Code Copy Description Applicable To Gastroparalysis Code First underlying disease, if known, such as:anorexia nervosa (F50.0-)diabetes mellitus (E08.43, E09.43, E10.43, E11.43, E13.43)scleroderma (M34.-)