R91.1 ICD-10-CM Code: Solitary pulmonary nodule
R91.1 is the billable ICD-10-CM code for “Solitary pulmonary nodule” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
R91.1Solitary pulmonary nodule
ICD-10-CM diagnosis code · United States clinical modification
Where R91.1 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
- 3
Category R91
Abnormal findings on diagnostic imaging of lung
- 4
Code R91.1
Solitary pulmonary nodule
Notes for this code
Inclusion terms
- Coin lesion lung
- Solitary pulmonary nodule, subsegmental branch of the bronchial tree
Code first
No “code first” instruction is listed for R91.1.
Use additional code
No “use additional code” instruction is listed for R91.1.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for R91.1.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R91.1.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code R91.1 mean?
R91.1 is the FY 2027 U.S. ICD-10-CM code for “Solitary pulmonary nodule.”
Is R91.1 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, R91.1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is R91.1 located in ICD-10-CM?
R91.1 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94) (R90–R94), under category R91, Abnormal findings on diagnostic imaging of lung.
What coding notes are listed for R91.1?
Its listed inclusion terms are Coin lesion lung; Solitary pulmonary nodule, subsegmental branch of the bronchial tree. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.