B44.81 — Allergic bronchopulmonary aspergillosis
Is B44.81 billable?
Yes — B44.81 is billable for FY2027. B44.81 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B44.81 may be submitted for encounters from October 1, 2026 through September 30, 2027.
B44.81 at a glance
| Code | B44.81 |
|---|---|
| Description | Allergic bronchopulmonary aspergillosis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does B44.81 group to?
B44.81 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.
- 196Interstitial Lung Disease with MCCmedical
- 197Interstitial Lung Disease with CCmedical
- 198Interstitial Lung Disease without CC/MCCmedical
As a secondary diagnosis, B44.81 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is B44.81 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to B44.81. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Aspergillosis › bronchopulmonary, allergic (with pneumonia)
- Aspergillosis › pulmonary NEC › allergic (with pneumonia)
Use additional code — inherited from Chapter 1
Report an additional code alongside B44.81 to fully describe the condition. B44.81 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 B44.81, but a patient may have both at the same time. When documentation supports it, B44.81 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 B44.81, but a patient may have both at the same time. When documentation supports it, B44.81 and the excluded code may both be reported.
Code also — inherited from B44
Two codes may be needed to describe the condition fully. Whether B44.81 is sequenced first depends on the reason for the encounter.
How long has B44.81 existed?
B44.81 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.