ICDcodes.org
FY2027

B37.1 — Pulmonary candidiasis

BillableMCC

Is B37.1 billable?

Yes — B37.1 is billable for FY2027. B37.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B37.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

B37.1 at a glance

CodeB37.1
DescriptionPulmonary candidiasis
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does B37.1 group to?

B37.1 sits in MDC 04 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 177Respiratory Infections and Inflammations with MCCmedical
  • 178Respiratory Infections and Inflammations with CCmedical
  • 179Respiratory Infections and Inflammations without CC/MCCmedical

As a secondary diagnosis, B37.1 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.

How is B37.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to B37.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Bronchomycosis NOS › candidal
  • Candidiasis, candidal › bronchitis
  • Candidiasis, candidal › lung
  • Candidiasis, candidal › pneumonia
  • Candidiasis, candidal › pulmonary
  • Pneumonia › Candida (acute) (double) (migratory) (purulent) (septic) (unresolved)
  • Pneumonia › in › candidiasis (acute) (double) (migratory) (purulent) (septic) (unresolved)

Code also

Two codes may be needed to describe the condition fully. Whether B37.1 is sequenced first depends on the reason for the encounter.

  • , if applicable:
  • pulmonary mycetoma (J4B)

Inclusion terms

Alternative wording in documentation that is classified to B37.1.

  • Candidal bronchitis
  • Candidal pneumonia

Excludes1 — never code together — inherited from B37

The conditions below can never be reported together with B37.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • neonatal candidiasis (P37.5)

Use additional code — inherited from Chapter 1

Report an additional code alongside B37.1 to fully describe the condition. B37.1 is sequenced first.

  • code to identify resistance to antimicrobial drugs (Z16.-)

Excludes2 — not included here — inherited from Chapter 1

The conditions below are not part of B37.1, but a patient may have both at the same time. When documentation supports it, B37.1 and the excluded code may both be reported.

  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Excludes2 — not included here — inherited from B35-B49

The conditions below are not part of B37.1, but a patient may have both at the same time. When documentation supports it, B37.1 and the excluded code may both be reported.

  • hypersensitivity pneumonitis due to organic dust (J67.-)
  • mycosis fungoides (C84.0-)

How long has B37.1 existed?

B37.1 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 B37.1?

ICD-10-CM declares these codes mutually exclusive with B37.1 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to B37.1?

What other codes are in the B37 family? (9)