A37.81: Whooping cough due to other Bordetella species with pneumonia
A37.81, whooping cough due to other Bordetella species with pneumonia, is listed as a covered diagnosis in 7 Medicare billing and coding articles that apply to 58 HCPCS Level II codes, including U0002 (2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19)…), U0001 (Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr…), G0238 (Therapeutic procedures to improve respiratory function…). 20 of these codes have a 2026 DMEPOS fee schedule amount; K0730 pays $245.69 (RR) depending on the state. The articles come from 4 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with A37.81 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| U0002 | 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc | Carrier judgment | — | 4 |
| U0001 | Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr diagnostic panel | Carrier judgment | — | 4 |
| G0238 | Therapeutic procedures to improve respiratory function, other than described by g0237, one on one, face to face, per 15 minutes (includes monitoring) | Carrier judgment | — | 2 |
| G0237 | Therapeutic procedures to increase strength or endurance of respiratory muscles, face to face, one on one, each 15 minutes (includes monitoring) | Carrier judgment | — | 2 |
| G0239 | Therapeutic procedures to improve respiratory function or increase strength or endurance of respiratory muscles, two or more individuals (includes monitoring) | Carrier judgment | — | 2 |
| K0730 | Controlled dose inhalation drug delivery system | Carrier judgment | $245.69 (RR) | 1 |
| E1372 | Immersion external heater for nebulizer | Special coverage instructions apply | $136.61–$208.94 (NU) | 1 |
| A7017 | Nebulizer, durable, glass or autoclavable plastic, bottle type, not used with oxygen | Special coverage instructions apply | $130.82–$194.58 (NU) | 1 |
| E0580 | Nebulizer, durable, glass or autoclavable plastic, bottle type, for use with regulator or flowmeter | Special coverage instructions apply | $164.65–$182.27 (NU) | 1 |
| E0575 | Nebulizer, ultrasonic, large volume | Special coverage instructions apply | $124.51–$159.48 (RR) | 1 |
| E0565 | Compressor, air power source for equipment which is not self-contained or cylinder driven | Carrier judgment | $42.74–$82.96 (RR) | 1 |
| E0574 | Ultrasonic/electronic aerosol generator with small volume nebulizer | Carrier judgment | $48.76–$67.63 (RR) | 1 |
| E0585 | Nebulizer, with compressor and heater | Special coverage instructions apply | $32.06–$60.76 (RR) | 1 |
| E0572 | Aerosol compressor, adjustable pressure, light duty for intermittent use | Carrier judgment | $29.16–$51.74 (RR) | 1 |
| A7005 | Administration set, with small volume nonfiltered pneumatic nebulizer, non-disposable | Carrier judgment | $11.77–$29.20 (NU) | 1 |
| A7008 | Large volume nebulizer, disposable, prefilled, used with aerosol compressor | Carrier judgment | $12.46–$18.09 (NU) | 1 |
| A7016 | Dome and mouthpiece, used with small volume ultrasonic nebulizer | Carrier judgment | $9.31–$17.75 (NU) | 1 |
| E0570 | Nebulizer, with compressor | Special coverage instructions apply | $6.09–$15.43 (RR) | 1 |
| A7006 | Administration set, with small volume filtered pneumatic nebulizer | Carrier judgment | $8.19–$14.94 (NU) | 1 |
| A7007 | Large volume nebulizer, disposable, unfilled, used with aerosol compressor | Carrier judgment | $3.47–$5.87 (NU) | 1 |
| A7012 | Water collection device, used with large volume nebulizer | Carrier judgment | $3.25–$5.03 (NU) | 1 |
| A4217 | Sterile water/saline, 500 ml | Special coverage instructions apply | $2.18–$4.93 | 1 |
| A7003 | Administration set, with small volume nonfiltered pneumatic nebulizer, disposable | Carrier judgment | $1.86–$3.26 (NU) | 1 |
| A7004 | Small volume nonfiltered pneumatic nebulizer, disposable | Carrier judgment | $1.51–$2.08 (NU) | 1 |
| A7018 | Water, distilled, used with large volume nebulizer, 1000 ml | Carrier judgment | $0.38–$0.59 | 1 |
33 more codes are listed. See every code with payment by region in Caduvo.
Medicare policy articles listing A37.81
- A52466: Nebulizers - Policy Article (CGS Administrators, LLC (DME MAC) Noridian Healthcare Solutions, LLC (DME MAC); 53 Level II codes). LCD with the same title: L33370
- A56717: Billing and Coding: Respiratory Therapy (Respiratory Care) (Palmetto GBA (MAC - Part A); 3 Level II codes). LCD with the same title: L34430
- A58710: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (Palmetto GBA (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58720: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58761: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58747: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A57224: Billing and Coding: Respiratory Care (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 3 Level II codes). LCD with the same title: L34149
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other A37 diagnoses (Whooping cough)
- A37.80 — Whooping cough due to other Bordetella species without pneumonia
- A37.00 — Whooping cough due to Bordetella pertussis without pneumonia
- A37.01 — Whooping cough due to Bordetella pertussis with pneumonia
- A37.10 — Whooping cough due to Bordetella parapertussis without pneumonia
- A37.11 — Whooping cough due to Bordetella parapertussis with pneumonia
- A37.90 — Whooping cough, unspecified species without pneumonia
- A37.91 — Whooping cough, unspecified species with pneumonia
Frequently asked questions
Does Medicare cover A37.81 (Whooping cough due to other Bordetella species with…)?
Medicare covers items and services, not diagnoses. 7 Medicare billing and coding articles list A37.81 as a covered diagnosis for 58 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 A37.81?
The Level II codes from the policies most specific to this diagnosis are U0002 (2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19)…, 4 articles); U0001 (Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr…, 4 articles); G0238 (Therapeutic procedures to improve respiratory function…, 2 articles); G0237 (Therapeutic procedures to increase strength or endurance…, 2 articles); G0239 (Therapeutic procedures to improve respiratory function or…, 2 articles). Code choice depends on the item supplied; check each code's descriptor.
What does Medicare pay for equipment billed with A37.81?
Under the 2026 DMEPOS fee schedule (non-rural state fees): K0730 $245.69 (RR); E1372 $136.61 to $208.94 (NU); A7017 $130.82 to $194.58 (NU); E0580 $164.65 to $182.27 (NU). Medicare pays 80% of the allowed amount after the Part B deductible.
Which Medicare policy articles list A37.81?
A52466 (Nebulizers - Policy Article); A56717 (Billing and Coding: Respiratory Therapy (Respiratory Care)); A58710 (Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing), and 4 more articles.
What is ICD-10-CM code A37.81?
A37.81 is the ICD-10-CM code for whooping cough due to other Bordetella species with pneumonia, in category A37 (Whooping cough), chapter 1: Certain infectious and parasitic diseases.
Next steps
- Run a reimbursement report for a device billed under U0002
- Watch U0002 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for U0002
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 1: Certain infectious and parasitic diseases · All diagnoses · HCPCS lookup