Is K31.3 a billable ICD-10-CM code?

Yes. K31.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does K31.3 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Diseases of esophagus, stomach and duodenum (K20-K31).

What cannot be coded together with K31.3?

K31.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

K31.3

K31.3 — Pylorospasm, not elsewhere classified

Billable / specific codeICD-10-CM

K31.3 is a billable, specific ICD-10-CM code for pylorospasm, not elsewhere classified. 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.

congenital or infantile pylorospasm (Q40.0)
neurotic pylorospasm (F45.8)
psychogenic pylorospasm (F45.8)

Risk adjustment

K31.3 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.

Medicare coverage

K31.3 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
A56421Billing and Coding: CT of the Abdomen and Pelvis
A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
A57414Billing and Coding: Upper Gastrointestinal Endoscopy (Diagnostic and Therapeutic)

How K31.3 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 K31.3.

Pylorospasm NEC(reflex)
Spasm, spastic, spasticity›pylorus NEC
Obstruction, obstructed, obstructive›stomach NEC›due to pylorospasm

Related codes at this level

Codes that share K31. If K31.3 is not quite right, the correct code is usually one of these.

Questions about K31.3

Is K31.3 a billable ICD-10-CM code?: Yes. K31.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K31.3 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Diseases of esophagus, stomach and duodenum (K20-K31).
What cannot be coded together with K31.3?: K31.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.