ICD-10-CM > K00-K95 > K20-K31 > K30 K30 Functional dyspepsia Billable/Specific Copy Code Copy Description Applicable To Indigestion Type 1 Excludes dyspepsia NOS (R10.13)heartburn (R12)nervous dyspepsia (F45.8)neurotic dyspepsia (F45.8)psychogenic dyspepsia (F45.8)