2027 ICD-10-CM Diagnosis Code Z90.2Acquired absence of lung [part of]

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z90

ICD-10-CM Z90.2
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z90.2 is a billable ICD-10-CM diagnosis code for acquired absence of lung [part of]. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 205 through 206. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as H/O: pneumonectomy. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acquired absence of limb or organ.

Code Identity

ICD-10-CM Code
Z90.2
Billable Status
Yes — Valid for Submission
Code Describes
Acquired absence of lung [part of]
Short Description
Acquired absence of lung [part of]
Same as the full description in the CMS dataset.
Parent Code
Z90
Acquired absence of organs, not elsewhere classified

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ90Acquired absence of organs, not elsewhere classified
This CodeZ90.2Acquired absence of lung [part of]

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z90.2.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z90.2 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • H/O: pneumonectomy
  • History of lung lobectomy
  • History of total lobectomy of lung

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z90.2: its own notes plus those printed at Z90, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Z90 Acquired absence of organs, not elsewhere classified applies to 22 codes
  • postprocedural or post-traumatic loss of body part NEC

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Z90 Acquired absence of organs, not elsewhere classified applies to 22 codes
  • congenital absence - see Alphabetical Index

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Z90 Acquired absence of organs, not elsewhere classified applies to 22 codes
  • postprocedural absence of endocrine glands (E89.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status applies to 567 codes
  • any follow-up examination (Z08-Z09)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z90.2, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming Z90.2: its condition is not part of those codes, and both may be reported when the patient has both.

  • M95 Other acquired deformities of musculoskeletal system and connective tissue
    acquired absence of limbs and organs (Z89-Z90) names Z89-Z90, which includes this code

Use Additional Code 1

These codes say to use an additional code from the note, and Z90.2 is one of the codes named.

  • Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm
    code to identify any acquired absence of organs (Z90.-) names Z90.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC022
Acquired absence of limb or organ
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Lung Diseases

When you breathe, your lungs take in oxygen from the air and deliver it to the bloodstream. The cells in your body need oxygen to work and grow. During a normal day, you breathe nearly 25,000 times. People with lung disease have difficulty breathing. Millions of people in the U.S. have lung disease.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z90.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V45.76 Acq absence of lung
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z90.2Overview

What is the ICD-10 code for acquired absence of lung [part of]?

The ICD-10-CM code for acquired absence of lung [part of] is Z90.2 (sometimes written as Z902). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z90.2 (Acquired absence of organs, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acquired absence of lung [part of] on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z90.2 group to?

On inpatient claims, acquired absence of lung [part of] maps to MS-DRG 206, 205, with relative weights from 0.9255 to 1.8244 depending on complications. Higher weights mean higher Medicare reimbursement.

Can Z90.2 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because acquired absence of lung [part of] describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z90.2 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for acquired absence of lung [part of] on inpatient claims. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.