Is A01.04 a billable ICD-10-CM code?

Yes. A01.04 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does A01.04 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Intestinal infectious diseases (A00-A09).

A01.04

A01.04 — Typhoid arthritis

Billable / specific codeICD-10-CM

A01.04 is a billable, specific ICD-10-CM code for typhoid arthritis. It is valid for submission on a claim.

Other codes that can never be billed with A01.04

These codes carry an Excludes1 note pointing at A01.04. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A01.04 alone.

M01Direct infections of joint in infectious and parasitic diseases classified elsewhere

Risk adjustment

A01.04 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 92 Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis0.479 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

A01.04 is named in 9 Medicare coverage policies — 9 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57326Billing and Coding: Electrocardiograms
A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

How A01.04 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A01.04.

Typhoid›arthritis
Arthritis, arthritic›due to or associated with›typhoid fever
Arthritis, arthritic›in›typhoid fever
Fever›typhoid›complicated by›arthritis

Related codes at this level

Codes that share A01.0. If A01.04 is not quite right, the correct code is usually one of these.

Questions about A01.04

Is A01.04 a billable ICD-10-CM code?: Yes. A01.04 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does A01.04 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Intestinal infectious diseases (A00-A09).