All ICD10 Codes

R90-R94

Non-Billable
ChapterR00–R99
Rankblock
Official Description

Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)

Use a more specific code (0 billable, 5 non-billable)
R90Abnormal findings on diagnostic imaging of central nervous systemhas subcodesR91Abnormal findings on diagnostic imaging of lunghas subcodesR92Abnormal and inconclusive findings on diagnostic imaging of breasthas subcodesR93Abnormal findings on diagnostic imaging of other body structureshas subcodesR94Abnormal results of function studieshas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

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

Includes
  • nonspecific abnormal findings on diagnostic imaging by computerized axial tomography [CAT scan]
  • nonspecific abnormal findings on diagnostic imaging by magnetic resonance imaging [MRI][NMR]
  • nonspecific abnormal findings on diagnostic imaging by positron emission tomography [PET scan]
  • nonspecific abnormal findings on diagnostic imaging by thermography
  • nonspecific abnormal findings on diagnostic imaging by ultrasound [echogram]
  • nonspecific abnormal findings on diagnostic imaging by X-ray examination
Excludes1(Not coded here. Use a different code.)
  • abnormal findings on antenatal screening of mother (O28.-)
  • diagnostic abnormal findings classified elsewhere - see Alphabetical Index

Clinical Hierarchy

BillableHas subcodes
CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R90-R94Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)Not billable
R90Abnormal findings on diagnostic imaging of central nervous systemSubcodes
R91Abnormal findings on diagnostic imaging of lungSubcodes
R92Abnormal and inconclusive findings on diagnostic imaging of breastSubcodes
R93Abnormal findings on diagnostic imaging of other body structuresSubcodes
R94Abnormal results of function studiesSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R90-R94:

chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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