Is ICD-10-CM code R27 billable?

No, R27 (Other lack of coordination) 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 R27 belong to?

R27 belongs to Chapter 18 of the ICD-10-CM tabular list: R00–R99 (Symptoms, Signs and Abnormal Clinical and Laboratory Findings).

R27Non-billable

Other lack of coordination

Symptoms, Signs and Abnormal Clinical and Laboratory Findings·Symptoms and signs involving the nervous and musculoskeletal systems (R25-R29)·category·FY 2026

Use a more specific code (3 billable)

R27.0Ataxia, unspecified R27.8Other lack of coordination R27.9Unspecified lack of coordination

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.)

ataxic gait (R26.0)
hereditary ataxia (G11.-)
vertigo NOS (R42)

Clinical Hierarchy

BillableHas subcodes

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

R25-R29Symptoms and signs involving the nervous and musculoskeletal systems (R25-R29)

R27Other lack of coordinationNot billable

R27.0Ataxia, unspecifiedBillable

R27.8Other lack of coordinationBillable

R27.9Unspecified lack of coordinationBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.