ICD-10 Code for Postnasal Drip
The default ICD-10-CM 2027 code for postnasal drip is R09.82 – Postnasal drip. More specific codes depend on the details documented, as listed in the official index (2 codes, 2 billable).
- Main code
R09.82– Postnasal drip- Billable
- Yes
Index entries for Postnasal drip
- due to
- allergic rhinitis – see Rhinitis, allergic
- common cold –
J00 - gastroesophageal reflux – see Reflux, gastroesophageal
- nasopharyngitis – see Nasopharyngitis
- other known condition - code to condition
- sinusitis – see Sinusitis
How to choose the right code
Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.
Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.