A30-A49 — Other bacterial diseases
ICD-10-CM codes A30-A49 cover other bacterial diseases, within certain infectious and parasitic diseases. The block holds 144 codes across 18 categories, of which 115 are billable and 29 are header codes that cannot be submitted on a claim.
Risk adjustment in A30-A49
0 codes in this block map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded. Under-coding here is money left on the table; over-coding here is what audits are for.
- HCC 2 Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock
- HCC 6 Opportunistic Infections
- HCC 92 Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis
- HCC 227 Cardiomyopathy/Myocarditis
- HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene
- HCC 282 Aspiration and Specified Bacterial Pneumonias
What else to watch in A30-A49
- 86 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.
Categories in A30-A49
- A30Leprosy [Hansen's disease]
- A31Infection due to other mycobacteria
- A32Listeriosis
- A33Tetanus neonatorum
- A34Obstetrical tetanus
- A35Other tetanus
- A36Diphtheria
- A37Whooping cough
- A38Scarlet fever
- A39Meningococcal infection
- A40Streptococcal sepsis
- A41Other sepsis
- A42Actinomycosis
- A43Nocardiosis
- A44Bartonellosis
- A46Erysipelas
- A48Other bacterial diseases, not elsewhere classified
- A49Bacterial infection of unspecified site