R09.82 — Postnasal drip

R09.82

ICD-10 Chapter 18: Symptoms, Signs & Abnormal Findings — illustrative image — Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99) — illustrative image

What this code means

Postnasal drip is mucus running down the back of the throat from the nose and sinuses, causing throat clearing and cough.

Also called: postnasal drip, catarrh.

When this code is used

Used for postnasal drip.

Where it sits in ICD-10-CM

Code R09.82 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Cough

Frequently asked questions

What is ICD-10-CM code R09.82?

R09.82 is the ICD-10-CM diagnosis code for “Postnasal drip”. Postnasal drip is mucus running down the back of the throat from the nose and sinuses, causing throat clearing and cough.

When is code R09.82 used?

Used for postnasal drip. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.