R91.8

Billable
ChapterR00–R99
Ranksubcategory
Official Description

Other nonspecific abnormal finding of lung field

Metadata & Insights
  • Billable/specific code (valid for reimbursement).
  • Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

Instructional Notes

Includes
  • Lung mass NOS found on diagnostic imaging of lung
  • Pulmonary infiltrate NOS
  • Shadow, lung
General instructions are available for the parent sections:

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)
R91Abnormal findings on diagnostic imaging of lung
R91.8Other nonspecific abnormal finding of lung fieldBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R91.8:

blockR90-R94
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
View context instructions
chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

Cross Reference

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