- R91.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM R91.8 became effective on October 1, 2022.
- This is the American ICD-10-CM version of R91.8 – other international versions of ICD-10 R91.8 may differ.
ICD-10-CM R91.8 is grouped within Diagnostic Related Group(s):
- 204 Respiratory signs and symptoms
Applicable To
- Lung mass NOS found on diagnostic imaging of lung
- Pulmonary infiltrate NOS
- Shadow, lung
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- 2024 (effective 10/1/2023): No change
- 2025 (effective 10/1/2024): No change
Diagnosis Index entries containing back-references to R91.8:
- lung (field) > diagnostic imaging R93.5
- lung > Infiltrate, infiltration
- on chest x-ray > Infiltrate, infiltration
- pulmonary > Infiltrate, infiltration
- lung > Mass
- multiple > lung, solitary (subsegmental branch of the bronchial tree) R91.1
- multiple > solitary, lung (subsegmental branch of the bronchial tree) R91.1