ICD-10-CM 2027
ICD-10 code for sputum abnormal
From the official ICD-10-CM alphabetic index entry “Abnormal, abnormality, abnormalities › sputum (amount) (color) (odor)”. Page updated September 29, 2026.
About coding sputum abnormal
The ICD-10-CM code for sputum abnormal is R09.3 (Abnormal sputum).
Within R09 (other symptoms and signs involving the circulatory and respiratory system), R09.3 is specifically for abnormal sputum. Related codes cover asphyxia and hypoxemia (R09.0), pleurisy (R09.1), respiratory arrest (R09.2), other specified symptoms and signs involving the circulatory and respiratory systems (R09.8) and foreign body sensation of the circulatory and respiratory system (R09.A).
Don't report R09.3 together with the conditions in its Excludes1 note: blood-stained sputum (R04.2).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for R09.3)
- blood-stained sputum (R04.2)
Common questions about sputum abnormal ICD-10 codes
What is the ICD-10 code for sputum abnormal?
- R09.3 — Abnormal sputum.
Is R09.3 billable?
- Yes. R09.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R09.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R09.3 as a principal diagnosis.
Is R09.3 a CC or MCC?
- No. R09.3 is neither a CC nor an MCC under MS-DRG v44.0.