Is ICD-10-CM code R56 billable?

No, R56 (Convulsions, not elsewhere classified) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code R56 belong to?

R56 belongs to Chapter 18 of the ICD-10-CM tabular list: R00–R99 (Symptoms, Signs and Abnormal Clinical and Laboratory Findings).

R56Non-billable

Convulsions, not elsewhere classified

Symptoms, Signs and Abnormal Clinical and Laboratory Findings·General symptoms and signs (R50-R69)·category·FY 2026

Use a more specific code (2 billable, 1 non-billable)

R56.0Febrile convulsionshas subcodes R56.1Post traumatic seizures R56.9Unspecified convulsions

CH18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

abnormal findings on antenatal screening of mother (O28.-)
certain conditions originating in the perinatal period (P04-P96)
signs and symptoms classified in the body system chapters
signs and symptoms of breast (N63, N64.5)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

dissociative convulsions and seizures (F44.5)
epileptic convulsions and seizures (G40.-)
newborn convulsions and seizures (P90)

Clinical Hierarchy

BillableHas subcodes

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

R50-R69General symptoms and signs (R50-R69)

R56Convulsions, not elsewhere classifiedNot billable

R56.0Febrile convulsionsSubcodes

R56.1Post traumatic seizuresBillable

R56.9Unspecified convulsionsBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.