Is ICD-10-CM code X30 billable?

Yes, X30 (Exposure to excessive natural heat) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2026.

What chapter does ICD-10-CM code X30 belong to?

X30 belongs to Chapter 20 of the ICD-10-CM tabular list: V00–Y99 (External Causes of Morbidity).

X30

Billable

ChapterV00–Y99

Rankcategory

Description

Exposure to excessive natural heat

About ICD-10-CM code X30

The ICD-10-CM tabular list places Exposure to excessive natural heat at code X30, inside V00-Y99 External Causes of Morbidity, within Exposure to forces of nature (X30-X39). You can submit this code on claims since it carries full billing specificity.

Metadata & Insights

•Billable/specific code (valid for reimbursement).
•Chapter 20: External Causes of Morbidity (V00-Y99).

Instructional Notes

Includes

Exposure to excessive heat as the cause of sunstroke
Exposure to heat NOS

Excludes1(Not coded here. Use a different code.)

excessive heat of man-made origin (W92)
exposure to man-made radiation (W89)
exposure to sunlight (X32)
exposure to tanning bed (W89)

Clinical Hierarchy

BillableHas subcodes

CH20External causes of morbidity (V00-Y99)

X30-X39Exposure to forces of nature (X30-X39)

X30Exposure to excessive natural heatBillable

X30.XXXAExposure to excessive natural heat, initial encounterBillable

X30.XXXDExposure to excessive natural heat, subsequent encounterBillable

X30.XXXSExposure to excessive natural heat, sequelaBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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