ICDcodes.org
FY2027

J98.4 — Other disorders of lung

Billable

Is J98.4 billable?

Yes — J98.4 is billable for FY2027. J98.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. J98.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.

J98.4 at a glance

CodeJ98.4
DescriptionOther disorders of lung
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does J98.4 group to?

J98.4 sits in MDC 04 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 205Other Respiratory System Diagnoses with MCCmedical
  • 206Other Respiratory System Diagnoses without MCCmedical

How is J98.4 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to J98.4. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Honeycomb lung
  • Pneumatocele (lung)
  • Pneumonitis (acute) (primary)
  • Pneumopathy NEC
  • Pulmolithiasis
  • Adhesions, adhesive › lung (postinfective)
  • Adhesions, adhesive › pulmonary (postinfective)
  • Atrophy, atrophic › lung (of)
  • Calcification › lung
  • Calculus, calculi, calculous › lung
  • Calculus, calculi, calculous › pulmonary
  • Cavitation of lung › nontuberculous

Excludes1 — never code together

The conditions below can never be reported together with J98.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • acute interstitial pneumonitis (J84.114)
  • pulmonary insufficiency following surgery (J95.1-J95.2)

Inclusion terms

Alternative wording in documentation that is classified to J98.4.

  • Calcification of lung
  • Cystic lung disease (acquired)
  • Lung disease NOS
  • Pulmolithiasis

Excludes1 — never code together — inherited from J98

The conditions below can never be reported together with J98.4 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Use additional code — inherited from Chapter 10

Report an additional code alongside J98.4 to fully describe the condition. J98.4 is sequenced first.

  • code, where applicable, to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Use additional code — inherited from J98

Report an additional code alongside J98.4 to fully describe the condition. J98.4 is sequenced first.

  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Excludes2 — not included here — inherited from Chapter 10

The conditions below are not part of J98.4, but a patient may have both at the same time. When documentation supports it, J98.4 and the excluded code may both be reported.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • smoke inhalation (T59.81-)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Excludes2 — not included here — inherited from J98

The conditions below are not part of J98.4, but a patient may have both at the same time. When documentation supports it, J98.4 and the excluded code may both be reported.

How long has J98.4 existed?

J98.4 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with J98.4?

ICD-10-CM declares these codes mutually exclusive with J98.4 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to J98.4?

What other codes are in the J98 family? (8)