D02.4 Carcinoma in situ of respiratory system, unspecified

✓ Billable ICD-10-CM 2026
Open D02.4 in Web App →

The ICD-10-CM code for Carcinoma in situ of respiratory system, unspecified is D02.4 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
D00-D09: In situ neoplasms (D00-D09)
Category D02
9 codes (7 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

D02 Carcinoma in situ of middle ear and respiratory system

Related Codes in D02

D02 Carcinoma in situ of middle ear and respiratory system D02.0 Carcinoma in situ of larynx D02.1 Carcinoma in situ of trachea D02.2 Carcinoma in situ of bronchus and lung D02.20 Carcinoma in situ of unspecified bronchus and lung D02.21 Carcinoma in situ of right bronchus and lung D02.22 Carcinoma in situ of left bronchus and lung D02.3 Carcinoma in situ of other parts of respiratory system
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

Get HCC Mappings, Clinical Summaries, and More

Access premium features including HCC risk adjustment, FDA drug indications, AI coding assistant, and comprehensive clinical context.

Start Free Trial