J45.991 — Cough variant asthma
Is J45.991 billable?
Yes — J45.991 is billable for FY2027. J45.991 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. J45.991 may be submitted for encounters from October 1, 2026 through September 30, 2027.
J45.991 at a glance
| Code | J45.991 |
|---|---|
| Description | Cough variant asthma |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does J45.991 group to?
J45.991 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.
- 202Bronchitis and Asthma with CC/MCCmedical
- 203Bronchitis and Asthma without CC/MCCmedical
How is J45.991 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to J45.991. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Asthma, asthmatic › cough variant (bronchial) (catarrh) (spasmodic)
Excludes1 — never code together — inherited from J40-J4B
The conditions below can never be reported together with J45.991 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Excludes1 — never code together — inherited from J45
The conditions below can never be reported together with J45.991 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 J45.991 to fully describe the condition. J45.991 is sequenced first.
Use additional code — inherited from J45
Report an additional code alongside J45.991 to fully describe the condition. J45.991 is sequenced first.
Excludes2 — not included here — inherited from Chapter 10
The conditions below are not part of J45.991, but a patient may have both at the same time. When documentation supports it, J45.991 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 J40-J4B
The conditions below are not part of J45.991, but a patient may have both at the same time. When documentation supports it, J45.991 and the excluded code may both be reported.
- cystic fibrosis (E84.-)
Excludes2 — not included here — inherited from J45
The conditions below are not part of J45.991, but a patient may have both at the same time. When documentation supports it, J45.991 and the excluded code may both be reported.
How long has J45.991 existed?
J45.991 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.