Is A51.39 a billable ICD-10-CM code?

Yes. A51.39 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does A51.39 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).

What cannot be coded together with A51.39?

A51.39 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

A51.39

A51.39 — Other secondary syphilis of skin

Billable / specific codeICD-10-CM

A51.39 is a billable, specific ICD-10-CM code for other secondary syphilis of skin. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

late syphilitic leukoderma (A52.79)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Syphilitic leukoderma
Syphilitic mucous patch

Other codes that can never be billed with A51.39

These codes carry an Excludes1 note pointing at A51.39. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A51.39 alone.

A52.79Other symptomatic late syphilis

Risk adjustment

A51.39 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How A51.39 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 A51.39.

Rupia(syphilitic)
Syphilid
Leukoderma, leukodermia NEC›syphilitic
Mucous›patches(syphilitic)
Patches›mucous(syphilitic)
Syphilis, syphilitic›atrophoderma maculatum
Syphilis, syphilitic›leukoderma
Syphilis, syphilitic›lip
Syphilis, syphilitic›macular atrophy of skin
Syphilis, syphilitic›mouth(secondary)
Syphilis, syphilitic›mucocutaneous(secondary)
Syphilis, syphilitic›skin(with ulceration) (early) (secondary)

Related codes at this level

Codes that share A51.3. If A51.39 is not quite right, the correct code is usually one of these.

Questions about A51.39

Is A51.39 a billable ICD-10-CM code?: Yes. A51.39 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does A51.39 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).
What cannot be coded together with A51.39?: A51.39 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.