ICD-10 Code for Urticaria

The default ICD-10-CM 2027 code for urticaria is L50.9 – Urticaria, unspecified. More specific codes depend on the details documented, as listed in the official index (18 codes, 16 billable).

Main code: L50.9 – Urticaria, unspecified
Billable: Yes

Index entries for Urticaria

with angioneurotic edema – T78.3 (header)
- hereditary – D84.1
allergic – L50.0
cholinergic – L50.5
chronic – L50.8
cold, familial – L50.2
contact – L50.6
dermatographic – L50.3
due to
- cold or heat – L50.2
- drugs – L50.0
- food – L50.0
- inhalants – L50.0
- plants – L50.6
- serum – T80.69 (header) – see also Reaction, serum
factitial – L50.3
familial cold – M04.2
giant – T78.3 (header)
- hereditary – D84.1
gigantea – T78.3 (header)
idiopathic – L50.1
larynx – T78.3 (header)
- hereditary – D84.1
neonatorum – P83.88
nonallergic – L50.1
papulosa (Hebra) – L28.2
pigmentosa – D47.01
- congenital – Q82.2
- of neonatal onset – Q82.2
- of newborn onset – Q82.2
recurrent periodic – L50.8
serum – T80.69 (header) – see also Reaction, serum
solar – L56.3
specified type NEC – L50.8
thermal (cold) (heat) – L50.2
vibratory – L50.4
xanthelasmoidea – see Urticaria pigmentosa

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.