D02.21 vs Z85.118

D02.21 (Carcinoma in situ of right bronchus and lung) compared with Z85.118 (Personal history of other malignant neoplasm of bronchus and lung), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

Z85.118 is the personal-history or screening code for the active disease D02.21 names, so the two are not interchangeable.

MedCoder-derived

What is different?

Title wording and chapter.The titles share “bronchus and lung”; D02.21 says “Carcinoma in situ of right” where Z85.118 says “Personal history of other malignant neoplasm of”. D02.21 sits in C00-D49 — Neoplasms (C00-D49); Z85.118 in Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Registry fact

Can these codes be reported together?

Not for the same condition.Z85.118 is the personal-history or screening code for the active disease D02.21 names. Site match derived from the code’s own title against the CMS/CDC Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.

MedCoder-derivedGuide: History codes (Z codes)

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. D02.21 carries 1 Excludes1 note covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

None.Neither entry carries an Excludes2 note that names the other code. Z85.118 carries 2 Excludes2 notes covering other codes; the side-by-side table quotes them.

Official rule

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

No.Both are billable codes, and neither contains the other.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

Yes.History or screening versus active disease. Z85.118 is the personal-history or screening code for the active disease D02.21 names.

MedCoder-derivedGuide: History codes (Z codes)

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Review

Condition lifecycle relationship

Z85.118

Personal history of other malignant neoplasm of bronchus and lung

↔

D02.21

Carcinoma in situ of right bronchus and lung

What we found

History or screening versus active disease.Z85.118 is the personal-history or screening code for the active disease D02.21 names.

Site match derived from the code’s own title against the CMS/CDC Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.

What to review

Report the history code when the condition no longer exists and is no longer treated; report the active-disease code while it is.

Guide: History codes (Z codes)Check these on a claim

Why it matters

A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code for the same site.

Source / rule

CMS Table of Neoplasms (site match derived from the code title)

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

D02.21ICD-10-CM

Z85.118ICD-10-CM

Official descriptionDiffers

D02.21

Carcinoma in situ of right bronchus and lung

Z85.118

Personal history of other malignant neoplasm of bronchus and lung

StatusSame for both

Billable

Excludes1Differs

D02.21

melanoma in situ (D03.-)

Z85.118

None at this code

Excludes2Differs

D02.21

None at this code

Z85.118

personal history of benign neoplasm (Z86.01-)
personal history of carcinoma-in-situ (Z86.00-)

Code firstDiffers

D02.21

None at this code

Z85.118

any follow-up examination after treatment of malignant neoplasm (Z08)

Use additional codeDiffers

D02.21

code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)

Z85.118

code to identify:
alcohol use and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)

Code alsoDiffers

D02.21

None at this code

Z85.118

any follow-up examination (Z08-Z09)

CategoryDiffers

D02.21

D02 Carcinoma in situ of middle ear and respiratory system

Z85.118

Z85 Personal history of malignant neoplasm

ChapterDiffers

D02.21

C00-D49 — Neoplasms (C00-D49)

Z85.118

Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)

IncludesDiffers

D02.21

Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia

Z85.118

Conditions classifiable to C34

No 7th character note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources