ICD-10-CM 2027
ICD-10 code for drip
From the official ICD-10-CM alphabetic index entry “Drip, postnasal (chronic)”. Page updated September 29, 2026.
About coding drip
The ICD-10-CM code for drip is R09.82 (Postnasal drip). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on R09.82.
Within R09.8 (other specified symptoms and signs involving the circulatory and respiratory systems), R09.82 is specifically for Postnasal drip. Related codes cover nasal congestion (R09.81) and other specified symptoms and signs involving the circulatory and respiratory systems (R09.89).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific drip codes (official index)
- due to
- allergic rhinitis
- common cold J00 — Acute nasopharyngitis [common cold]
- gastroesophageal reflux
- nasopharyngitis
- other known condition - code to condition
- sinusitis
Common questions about drip ICD-10 codes
What is the ICD-10 code for drip?
- R09.82 — Postnasal drip. More specific codes apply when the documentation supports them: J00.
Is R09.82 billable?
- Yes. R09.82 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R09.82 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R09.82 as a principal diagnosis.
Is R09.82 a CC or MCC?
- No. R09.82 is neither a CC nor an MCC under MS-DRG v44.0.