ICD-10-CM · N18.3
ICD-10 N18.3: Chronic kidney disease, stage 3 (moderate)
Stage 3 CKD (eGFR 30-59). Now split into N18.30 (unspecified), N18.31 (stage 3a, 45-59), N18.32 (stage 3b, 30-44).
Code
N18.3
Category
Diseases of the genitourinary system (N00-N99)
Clinical context
Stage 3 CKD (eGFR 30-59). Now split into N18.30 (unspecified), N18.31 (stage 3a, 45-59), N18.32 (stage 3b, 30-44).
Documentation requirements
- eGFR with date
- Stage specification (3a vs 3b)
- Underlying etiology
Common related procedures
- 82570 creatinine
- 82043 microalbumin
Common payer denial patterns
- Use N18.31 or N18.32 for greater specificity
- Iron infusion (J1756) requires anemia of CKD documentation
Frequently asked questions
What does ICD-10 N18.3 mean?
Chronic kidney disease, stage 3 (moderate)
When is this code documented?
Stage 3 CKD (eGFR 30-59). Now split into N18.30 (unspecified), N18.31 (stage 3a, 45-59), N18.32 (stage 3b, 30-44).
What documentation supports this code?
eGFR with date; Stage specification (3a vs 3b); Underlying etiology.
What are common denials associated with this diagnosis?
Use N18.31 or N18.32 for greater specificity; Iron infusion (J1756) requires anemia of CKD documentation.
Related diagnoses
Sources
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