R91.1
Billable codeSolitary pulmonary nodule
The ICD-10 code for solitary pulmonary nodule is R91.1.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Coin lesion lung
- Solitary pulmonary nodule, subsegmental branch of the bronchial tree
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R91.8Other nonspecific abnormal finding of lung field
- R91.1Solitary pulmonary nodule
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 79311
Associated MS-DRGs
R91.1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.