Design an ICD-10 Prediction System for Clinical Records

Quick Overview

Design an ICD-10 prediction system for clinical records, covering labels, model choices, rare-code evaluation, long documents, and reviewer feedback.

Design an ICD-10 Prediction System for Clinical Records

Company: Ambience

Role: Machine Learning Engineer

Category: ML System Design

Difficulty: hard

Interview Round: Technical Screen

Design a machine learning system that takes a clinical case record and predicts the relevant ICD-10 diagnosis codes. Explain the prediction target, how you would obtain and prepare training examples, a practical modeling approach, and how you would evaluate and serve the predictions. The case-record format, available labels, deployment scale, and required accuracy are unspecified; state your assumptions instead of assigning arbitrary targets. Explain how the design changes if a case can have several valid codes. ### What a Strong Answer Covers - A distinction between predicting recorded diagnosis codes and making a new clinical diagnosis, with an explicit single-label or multilabel formulation. - A data and label pipeline that avoids leaking the target codes into the model input and keeps related patient records out of opposing evaluation splits. - A baseline and a justified path to a richer model, including handling long records, infrequent codes, and the applicable code-set version. - Evaluation of incorrect and missing codes, confidence-based review, and traceability from a prediction to its input and model version. ```hint Define the label first A record can mention historical conditions, ruled-out conditions, and current findings. Decide what the training annotation actually marks as a target before choosing the model output. ``` ### Follow-up Questions - How would you evaluate performance on rare codes when common codes dominate the dataset? - What would you change if records regularly exceed the model's context limit?

Overview: Design an ICD-10 prediction system for clinical records, covering labels, model choices, rare-code evaluation, long documents, and reviewer feedback.

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Sep 3, 2026
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Design a machine learning system that takes a clinical case record and predicts the relevant ICD-10 diagnosis codes.

Explain the prediction target, how you would obtain and prepare training examples, a practical modeling approach, and how you would evaluate and serve the predictions. The case-record format, available labels, deployment scale, and required accuracy are unspecified; state your assumptions instead of assigning arbitrary targets. Explain how the design changes if a case can have several valid codes.

What a Strong Answer Covers Guidance

  • A distinction between predicting recorded diagnosis codes and making a new clinical diagnosis, with an explicit single-label or multilabel formulation.
  • A data and label pipeline that avoids leaking the target codes into the model input and keeps related patient records out of opposing evaluation splits.
  • A baseline and a justified path to a richer model, including handling long records, infrequent codes, and the applicable code-set version.
  • Evaluation of incorrect and missing codes, confidence-based review, and traceability from a prediction to its input and model version.

Follow-up Questions Guidance

  • How would you evaluate performance on rare codes when common codes dominate the dataset?
  • What would you change if records regularly exceed the model's context limit?

Submit Your Answer to Earn 20XP

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